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DESCRIPTIONS OF POINTS PERMANENTLY MARKED. Descriptions of stations Buster, Wayne, and Kansas City are given in the Commission's report for 1887. Those stations marked U. S. C. & G. S. may be had from the U. S. Coast and Geodetic Survey Office, and the new ones which it was practicable to mark are as follows:

Rice is about 1} miles south west from Raytown, Mo., on a high ridge between the Littlo and Big Blue rivers, on land owned by Mr. E. Ć. Rice. "It is near the center of the SW. # of the NW. 4 of sec. 8, T. 48 N., R. 32 W. It is 120 paces south from the north side of the 40 and 174 paces east from the stone fence of the road along the west side of the 40 paces (assumed to be 3 feet each). It is marked by a 2-inch iron pile 41 feet in length, driven down nearly flush with the surface of the ground.

Section corner on State line is that between the fractional sections 26 aud 35 of T. 12 S. and R. 23 E. from the sixth principal meridian.

Bridge, Chicago, Milwaukee and St. Paul, is 128.5 feet northerly from the center of the north pier of the Chicago, Milwaukee and St. Paul Railroad bridge, in line with the west guard rail prolonged, is on the curved embankment 5 feet west from the west rail, and about 4 feet east from a signal post. It is a gas pipe driven into the ground with its top 3 inches below surface.

Bridge, Hannibal and St. Joseph, is a nail of the survey of 1890 driven in a masonry joint on the east end of the north pier of the Hannibal and St. Joseph Railroad bridge.

Bridge, Missouri Pacitie, is on the east end of the north pier of the Missouri Pacific Railroad' bridge over the Kaw River. It is a nail wedged between the iron bed plates and is 5 inches west from the east edges of the bed plates.

New York Life is on the roof of the New York Life Insurance building, near the northeast corner. It is a cross cut in the tile of the roof at a distance of 2.68 feet from the east wall and 2.50 feet from the north wall.

Evans is on the building of the Evans Drug Company, on Fifth street near Washington street. It is on the roof of the elevator shaft at the north west corner of the building and is marked by the head of a screw.

Armour is on the State sine, on the south wall of the office of the Armour packing house. It is marked by a cross cut in a brick. The State line is also marked by a vertical line on the wall of the south side of said office.

Point on county line is on the county line between Platte and Clay counties, Mo. It is a fence post 55 feet south from the center of the railroad track and at the water's edge on the north side of the Missouri River.

In the office reduction of the notes I have been assisted by Assistant Engineer Turner and Computer C. E. Taylor. Very respectfully, your obedient servant,

0. B. WHEELER,

Assistant Engineer.

APPENDIX A 2.

ANNUAL REPORT OF 0. H. B. TURNER, ASSISTANT ENGINEER, 1894.

OFFICE MISSOURI River COMMISSION,

St. Louis, Mo., June 30, 1894. SIR: I have the honor to submit the following report on field and office work under my charge for the past year.

It was decided in September to send out a party to connect with the line of precise levels, by a carefully checked line of levels, all bench marks and stone lines,

ENG 94- -194

which had not been connected at time of running the precise line on account of their distance from it; nor bad any connection by wye levels been run at time stone line was put in, as the bench marks of 1880 and 1881 from which the stone lines were established were found to be unreliable.

The party left St. Louis, September 23, for Crescent, Iowa, the farthest point at which work was required.

The party consisted of an assistant engineer and two rodmen, and such additional force as was required was employed where necessary. This was done to save transportation.

Work was begun on September 25 and continued until November 3, when work was completed at Boonville, Mo.

As stone lines 48–41, inclusive, had been leveled in one direction, they were considered unreliable and it was thought best to rerun them. Assistant Engineer L. P. Butler reported at Glasgow, Mo., October 25, to assist in rerunning these lines, as the river crossings could be made much better by two parties than by one.

With but two exceptions these isolated stone lines and benches were connected with precise bench marks, and in these cases, connection was made to benches that were reliable.

No very large discrepancies were found, except on stone line No. 101, where an error of nearly 2 feet was discovered. There were several discrepancies of from 1 to 0.2 of a foot.

All stone lines and bench marks that were doubtful were rerun or good connection made to reliable benches.

There were 70 miles of checked levels run and 8 river crossings made. Party was out forty-two days, including time in going from St. Louis to the field and in returning.

The total cost of survey, including transportation and expressage of instruments, was $719.90, or $10.28 per mile of checked levels. The cost per mile, exclusive of transportation and expressage of instruments, was $8.35. 77

45 Bench mark No. has been washed out by the river; No. could not be found, 2

2 and was said to have been covered by driftwood and deposits of sand.

Sinco returning from the field the notes have been checked and the new values of bench marks tabulated.

The field notes of precise level survey of May and June have been reduced and checked, descriptions of bench marks have been written up, and all are now in form for publication. No errors were found in the field notes, and all lines check within the precise limit.

The probable error per kilometer for the whole line is +0.67 mm. The precise leveling rods X and XIII have been compared with the standard meter of Mississippi River Commission and found to be of normal length.

These rods were compared in April, 1863, by Assistant Engineer 0. W. Ferguson, and found to have been long, but as they had just returned from a field season near the gulf, no weight was given to that comparison.

For my report on field operations see Appendix A 7 of report of Missouri River Commission for 1893.

On account of so many large discrepancies being found between the precise levels and the ordinary levels, two of which proved on examination to be errors of computation, it was decided to recompute the level notes over stone lines from the inonth of river to Sioux City, Iowa, and from Fort Benton to Three Forks, Mont.

The large discrepancies between the precise and the ordinary levels were found to be due (1) to errors in the field notes, lines not checking and this fact not being discovered; or (2) to errors of computation; or (3) to stone lines having been put in from old bench marks which either were not identified or were in error.

Quite a number of small changes were made from the former reduction.

The elevations of the bench marks as reduced depend on precise bench marks, generally not more than 3 or 4 miles distant; so no large discrepancy may be expected.

The level notes between Fort Benton and Three Forks, Mont., were recomputed and a correction of+13.522 feet was applied to elevation of B. M. 1, at Fort Benton. This elevation of B. M. Į was brought down from Northern Pacific Railroad levels at Gallatin, Mont., by Assistant Engineer G. A. Marr in 1890.

The correction of +13.522 feet depends on elevation of B. M. 1, at Fort Benton, as determined from the precise benches of Missouri River Commission at Sioux City, Iowa, lıy survey parties under Capts. C. F. Powell and H. F. Hodges and the Missouri River Commission.

A buok of bench marks is now being prepared and is nearly completed. This book will contain (1) all bench marks of 1881 and 1882, also those of former surveys that were connected with at that time; (2) all bench marks of stone lines put in from 1881 to 1890; (3) all precise bench marks of 1887, 1892, and 1893 also all precise temporary bench marks that were considered sufticiently permanent for future use.

It is proposed to designate the degree of accuracy of these bench marks by names and by the use of large and small type.

The bench marks included in this book are from mouth of river to Sioux City, Iowa, and from Fort Benton, Mont., to Three Forks, Mont.

The precise bench marks from Sioux City, Iowa, to St. Joseph, Mo., have been platted on the detail maps, scale 1 inch=1,000 feet. At time of running precise line accurate stadia distances were taken to located points of topography, and as line of levels was along the railroad the bench marks have been platted on the detail sheets with about the same degree of accuracy as that of the adjacent topography.

Summary of work done by Assistant Engineer 0. W. Ferguson :

The remaining work on field notes that was unfinished at end of fiscal year 1893 was completed.

The precise and temporary precise bench marks were platted on detail sheets, scale 1 inch=1,000 feet, froin St. Joe to mouth of river.

Several profile sheets were made in office:

One showing the discrepancies between the Missouri River Commission preciselevel line and the bench marks connected with by precise-level party from St. Joe to mouth of river;

A second showing discrepancies between direct and reverse precise level line, from St. Joe to mouth of river;

A third showing discrepancies between U. S. Coast and Geodetic Survey and Missouri River Commission's precise levels from Kansas City to St. Louis; and

A fourth showing limit of error of closure between precise-level lines over same stretch.

The following is a summary of work of Y level survey under my charge;

Party was out forty-two days, including time in going to and from work. River distance covered..

467 Line leveled and checked.

70 River crossings made

8 Precise bench marks connected with

25 Ordinary bench marks connected with

37 Stone lines connected with.

21 Stone lines rerun

10 Very respectfully, your obedient servant,

0. H. B. TURNER,

Assistant Engineer.

Miles.

[blocks in formation]

DESCRIPTIONS AND ELEVATIONS OF PRECISE LEVEL BENCI MARKS

SURVEY FROM BLAIR, NEBR., TO DE WITT, MO.

All elevations are given in both meters and feet, and refer to St. Louis City directrix as zero. The elevation of this above Biloxi sea level is 412.731 feet.

A P. B. M. is a precise bench mark that is set to be practically permanent. All P. B. Ms., excepting 327 B, which is a cross on B. M. stone, are (1) top of copper bolts in regulation B. M. stone, or (2) center of copper bolt set horizontally, or (3) marks on bridge piers.

The value of the meter used is 3.2808693 feet.

[blocks in formation]

Top of cap, P. B. M.

360 A. P. B. M. 360 B

Is on west pier of railroad bridge across Missouri River,

194. 3163

637. 326

near Blair, Nebr. Is center of circle on west coping stone on south end of west pier. The letters B. M. are cut in stone just north of bench.

Descriptions and elevations of precise level bench marks, etc.-Continued.

Elevation.

Number.

Description.

Meters.

Feet.

[blocks in formation]

and N.,

[blocks in formation]

P. B. M. 360 C=17? Is on west pier of railroad bridge across Missouri River,

near Blair, Nebr. Is o cut on top of coping of north

end of pier with the letters U. S.
Gauge B. M., Blair, Is on west pier of railroad bridge across Missouri River,
Nebr.

near Blair, Nebr. The bench is in south side of pier, in
third course of masonry, below lower coping stone, is
upper surface of a projection 0.5 feet below top of stone

2.3 feet northwest from south corner of pier.
P. B. M.336=417 Is about 1} miles southwest of Pacific Junction, Mills

County, Iowa, on land owned by Charles Kroon, 32 feet
east, 51 feet south of the northwest corner of the north-
east quarter of the northeast quarter of section 32, T. 72

R. 43 W., being copper bolt in B. M stone.
Top of cap, P. B. M.

336--117
P. B. M. 336 A = 117. Is about 14 miles east of railroad bridge across Missouri

River at Plattsmouth, Nebr.; is on south side of east
and west road, 128 feet east and 40 feet south of north-
west corner section 31, T. 72 N., R. 43 W., in dooryard

of Miss Lizzie Smith, being copper bolt in B. M. stone. Top of cap, P. B. M.

336 ANI?
Gauge B. M., Platts- On top of stone foundation of north end of first iron bent
mouth.

west of the west stone pier of the railroad bridge across
Missouri River at Plattsmouth, Nebr. The B. M. is the
highest part of the stone between the grooves at north-

east corner of cross (+).
P. B. M.336 B = 113, Is at railroad bridge across Missouri River at Plattsmouth,
Plattsmouth.

Nebr.; is 10 feet sontlı, and on line with first trestle bent

west of west pier, being copper bolt in B. M. stone. Top of cap, P. B. M.

336 B="1?. P. B. M. 327

Is 3,884 feet northward from depot at Nebraska City

154.5486

507.054

155. 7735

511. 072

154. 4311

506. 668

Junction, Fremont County, Iowa, and 45 feet cast of
the Kansas City, St. Josephi and Council Bluffs Ry.

track on a sand knoll, being copper bolt in B. M. stone. Top of cap, P. B. M.

327.
P. B. M. 327 A....... Is about 15 miles west of Nebraska City Junction, Iowa,

on south side of wagon roail running west from Ne
braska City Junction 10 Burlington and Missouri River
R. R. bridge across Missouri River at Nebraska City,
Nebr.; is 1,150 feet east of a house on north side of road
occupied by John Duncan, 3,130 feet west of where wagon
road crosses Burlington and Missouri track to l'ayne's
pasture, and 7 feet south of fence, being copper bolt in

B. M.stone.
Top of cap, P. B. M.

327 A.
P. B. M, 327 B, Ne. Is in west abutment of Burlington and Missouri River R.
braska City, Nebr. R. bridge across the Missouri River at Nebraska City,

Nebr.; is highest part in center of circle cut in third
stone from west in top course of masonry, and is marked

with letters B. M. on south.
Gauge B. M., Ne- Is on west abutment of Burlington and Missouri River R.
braska City, Nebr. R. bridge across Missouri River at Nebraska City, Nebr.;

is a bench cut in south side of abutment, about 2 feet

above ground, near southeast corner.
P. B. M. 318 = 19, Is at Phelps, Atchison County, Mo., in the northeast
Phelps, Mo.

corner of the Methodist churchyard and 38 feet from
the northeast corner of the church, being copper bolt

in B. M. stone. Top of cap, P. B. M.

318–196.
P. B. M. 318 A=. 199. Is abont 1 mile west from Phelps, Mo., on south side of

east and west road, 780 feet west from northeast corner
of SE. 1 sec. 34, T. 65 N., R. 42 W., in dooryard of B.

A. DeBuhr, being copper bolt in B. M. stone.
Top of cap, P. B. M.

318 A=in. P. B. M. 318 B = 196 Is at Brownville, Nebr., at northwest corner of Main

street and levee, and 122 feet northwest from depot,

being copper bolt in B. M. stone. Top of cap, P. B. M.

318 B-106 P. B. M. 304.

18 627 feet southward from the depot at Napier, Holt

County, Mo., 287 feet southward from the head block of
the Burlington and Missouri River and the Kansas
City, St. Joseph anal Council Bluffs Ry. junction, and
43 feet cast of the Kansas City, St. Joseph and Council
Blutl's Ry, track, being copper bolt in B. M. stone.

155. 6705

510.35

171. 7515

563. 494

161. 9375

531. 296

144. 6591

474. 608

145. 8836

478. 625

144. 1945

473. 083

145. 4364

477. 158

149.9484

491, 961

151. 1884

496. 029

132. 1619

433. 606 99. 1279

Descriptions and elevations of precise level bench marks, etc.-Continued.

[blocks in formation]

Top of cap, P. B. M.

344 B. P. B. M. 304 C=0

[blocks in formation]

Is 7,600 feet east from east pier of Burlington and Missouri

River R. R. bridge across the Missouri River at Rulo,
Nebr., 400 feet north of Burlington and Missouri River
track center, 20 feet west of north and south road,
which crosses the line of Burlington and Missouri River
R. R. under the first lyridge east from river, 82 feet north.
east from small log house occupied by K. Burge and on
land owned by Ben Cunningham, in southeast corner
of cultivated field and 2 feet from corner post of lence,
being copper bolt in B. M. stone.

Top of cap, P.B.M.

[blocks in formation]

P. B. M. 304 D.

137. 2540

450.312

Is in west pier of Burlington and Missouri River R. R.

bridge across Missouri River at Rulo, Nebr. Is center of
holo in horizontal bolt leaded into west side of granite
pier, in second course of masonry above ground, and in
fourth block from north end, and in third block from
south end of pier. Is 0.3 foot below top of block and
1.8 feet from south end, and 1.5. feet from north end. Is
marked U.S.

[blocks in formation]

B. M.
Gauge B. M., Rulo, Is in west face of a granite block in the west side of the
Nebr.

west pier of Burlington and Missouri River R. R.
bridge at Rulo, Nebr. The block is in second conrse of
masonry from ground, and is the first straight block from
tho south end of pier (the block south being rounded).
The bench is a projection flattened on upper side, and
is 1.7 feet from north end of block and 0.4 foot below

top of block.
P. B. M, 304 E =.. Is at Rulo, Nebr., in dooryard of John Stull, at west side

of Commercial street, and 170 feet south from south

line of Stutzen street. Is copper bolt in B. M. stone. Top of cap. P. B. M.

304 E=
P. B. M. 228 = 1 Is on right bank about 3} miles below Hannibal and St.

Joseph R. R. bridge across Missouri Riverat Kansas City,
Mo., five-eighths of a milesontheast of Crescent elevator,
about 2, 295 feet north of tile factory, at northeast corner
of intersection of two county roads, 120 feet S. 650 W. of

Lizzie Wright's house; being copper bolt in B. M. stone.
Top of cap, P.B.M.

325. 226

114, 9573

377. 160

2781
P. B. M. 228 A...... Is on west end of north pier of Chicago, Milwankee and

St. Paul R. R. bridge across Missouri River near Kansas
City, Mo. Is center of square cut in cap stone, 1.1 feet
west of west iron girder of approach, and 1.5 feet south
from north edge of pier. The letters B. M. are cut in

the stone south of square.
P.B. M. 228 B = ... Is on left bank 970 feet above Chicago, Milwaukee and

St. Paul R. R. bridge across the Missouri River near
Kansas City, Mo., and 25 feet toward river from Wabash

track. Is copper bolt in B. M. stone. Top of cap, P. B. M.

*228 B=3
P.B. M. 171 -
= .. Is opposite De Witt, Mo., on line running east and west

through center of section 22, T. 53, R. 21 W., 60 feet west
of quarter post between sections 22 and 23, about 820
feet west of S. W. Wood's house at south road fence;

being copper bolt in B. M. stone. Top of cap, P. M. B.

171=
P.B. M. 171 A.=.. Is on right bank, opposite De Witt, Mo., and about one-half

of a mile from Missouri River. Is on east side of north
and south road between sections 15 and 16, and 470 feet
north from southwest corner of section 15; being copper
bolt in B. M. stone.

101.8795

334. 253

103. 1199

338. 323

67. 7800

222. 377

69. 0102

226. 433

67. 7440

222. 259

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