to factory inspection of machinery and material coming under the cognizance of the Bureau of Yards and Docks, Navy Department." The general provisions forming a part of all public works contracts state that all inspection of material and workmanship will be made, unless otherwise provided, after delivery at the site, and that when material is to be inspected at the factory, the instructions previously mentioned will govern. There is also issued by the Navy Department a booklet entitled "General Specifications for Inspection of Material." These general specifications form a part of all Navy Department leaflet specifications, and are now referred to in and made a part of all contracts made by the Bureau of Supplies and Accounts for material purchased for this and other bureaus of the Navy Department. It is intended that the practice of the Bureau of Yards and Docks shall conform, as nearly as conditions permit, to the procedure set forth in this booklet.

19-05. Bureau supervision of inspection. Navy Regulations, article 393-11, provides as follows: "Each bureau shall inspect all material for its use, except at navy yards, where inspection shall be made as provided for in article 1612. Controversial questions as to the acceptance of manufactured or purchased articles shall be referred to the bureau having cognizance." In executing this provision, the bureau directs inspection through a central office under the supervision of a chief inspector. The bureau maintains no field factory inspection organization, but utilizes the services of inspectors of engineering material and inspectors of machinery jointly with the Bureau of Engineering.

19-06. Authority for such joint inspection is based upon a joint letter of the Bureaus of Ordnance, Yards and Docks, and Engineering (Bu. Navigation file No. 6074-11), dated October 22, 1910, to the Secretary of the Navy, reading in part as follows: "The undersigned request that orders be issued to the inspectors of engineering material at Harrisburg, Pa., and Boston, Mass., to inspect all material coming under the cognizance of the Bureaus of Ordnance and Yards and Docks, as may be directed by these bureaus, such inspections to be reported directly to the bureau concerned. This is in addition to their present duties; and that similar orders to inspect all material coming under the cognizance of the Bureau of Yards and Docks be issued to the inspectors of engineering material at Munhall, Pa., South Bethlehem, Pa., Brooklyn, N. Y., Hartford,

Conn., Chester, Pa., and Philadelphia, Pa. * * * The object of this request is to eliminate unnecessary correspondence and to expedite business." Under date of November 5, 1910 (see Bu. Navigation file No. 1777-68), the Secretary of the Navy issued to these inspectors orders reading as follows: "You will inspect all material coming under the cognizance of the Bureau of Yards and Docks, Navy Department, at your station. Report such inspection directly to the bureau concerned. This is in addition to your present duties." As additional inspection offices have been established by the Bureau of Engineering, these arrangements have been concurrently extended. This bureau similarly utilizes the services of timber inspectors under the Bureau of Construction and Repair, as formally authorized in joint circular letter dated June 6, 1923 (Y. & D. No. 809-1, C. & R. No. 939-A 217-S), and also the cement testing service of the Bureau of Standards, Department of Commerce. The bureau also arranges, in special cases, for direct inspection by its own representatives.

19-07. Organization; inspection districts. The Bureau of Engineering maintains an inspection division, with branch offices located in various industrial centers throughout the country. The districts covered by its various inspectors of engineering material and the location of its inspectors of machinery are designated in a booklet (Form N. Eng. 10) entitled "List of Stations of Inspectors of Engineering Material and Inspectors of Machinery." The Bureau of Construction and Repair maintains timber inspection offices at various navy yards and stations, and issues a booklet entitled "Inspection Districts," which includes timber inspection districts. The Bureau of Standards (Department of Commerce) maintains a cement testing service covering the principal mills of the country, which is available to all Government agencies, including the Naval Establishment. Arrangements have been made with a number of the larger mills for the segregation of Government-tested cement in sealed bins, so that orders from the Government or from contractors may be filled without delay.

19-08. Distribution of inspection instruction booklets. The Bureau of Supplies and Accounts regularly forwards to all yards and stations a supply of the booklets previously mentioned, viz: General Specifications for Inspection of Material (Navy Department); List of Stations of Inspectors of Engineering Material and

Inspectors of Machinery (Bureau of Engineering, Form N. Eng. 10); Inspection Districts (Bureau of Construction and Repair). Public works officers and others concerned with the installation of factory inspected material, whether under contract or by day labor, should make arrangements to insure prompt receipt and filing of these booklets.

19-09. Inspection of raw materials. Large shipments of stone, sand, gravel, or other raw materials should be inspected at the point of original shipment unless obtained from the immediate neighborhood of the work. Such cases are so infrequent that no regular inspection service has been organized, the bureau's practice being to make special arrangements in each case. Ordinarily, the nearest yard or station will be directed to detail the personnel required for making the inspection.

NOTE.-Sections II, III, and IV, below, are phrased as instructions to yards and stations. Bureau procedure, as noted in Section V, is practically identical.

SECTION II. PROCEDURE FOR INSPECTION OF MANUFACTURED

ARTICLES.

19-10. Instructions to contractor, in the case of public works contracts, are issued by the bureau upon distribution of the copies of the signed contracts, stating whether the checking of drawings and arranging for factory inspection will be carried out by the bureau or by the yard. These instructions are contained in a form letter addressed to the contractor, with a copy to the yard or station concerned. This letter not being released until a contract legally exists, its issue may at times be delayed for some weeks from the date of award.

19-11. Preliminary instructions to yard or station. As contractors, at their own risk, frequently begin work during this interval, it might happen that the yard would be uninformed as to the duty to be later assigned to it. To obviate such contingency the bureau will advise the yard, as soon as practicable after award of contract, as to whether the yard or the bureau will make arrangements for inspection. The yard or station, after the bureau has delegated its authority, acts in the bureau's stead in assigning inspection work to the various inspectors of engineering material, inspectors of machinery, and timber inspectors, and to the Bureau of Standards.

19-12. Notification to contractor. The yard will examine the specification and note the materials for which factory inspection is required. Reference is made in all contract specifications to the Navy Department standard (leaflet) specifications which apply to the materials to be furnished under the contract. As previously stated, the "General Specifications for Inspection of Material" form a part of these leaflet specifications, and require factory inspection of the materials designated unless waived by the bureau or its authorized representative. Also, in the detailed specifications of public works contracts, further amplifying provisions are frequently given for shop inspection and tests, and should be strictly adhered to in all cases. If factory inspection be impracticable under the bureau policy previously stated in this chapter, the yard may waive such inspection. After determining what materials are to be given factory inspection, the yard shall notify the contractor, requesting four copies of each of his orders for materials. A carbon copy of this letter must be invariably sent to the bureau.

19-13. Examination of contractor's orders. Copies of orders, when received, should be compared by the yard with the specification and any modifying provisions contained in the contract, particularly with reference to quality and sufficiency, of the materials ordered, but only incidentally as to their dimensions and quantities, since the contractor is entirely responsible as to the latter. If the order be not in accordance with the specification requirements, the contractor will be directed to furnish a corrected order. When the order is satisfactory, the first copy should be filed by the yard, with suitable notations. Orders should show the name and factory address of the actual manufacturer. A follow-up system should be employed to insure the submission of all orders for materials requiring factory inspection.

19-14. Ascertaining proper inspection office. The List of Stations (Form N. Eng. 10) should be consulted to ascertain to what inspection office the work will be assigned. All cities and towns containing factories which can probably produce material for the Navy are noted in the list. An up-to-date marginal index atlas, with alphabetical index of all places, should be consulted to facilitate the location of points which are not listed in the bulletin. Inspection at such points should be assigned to the nearest office, measured on railroad lines.

19-15. Inspection requests; special forms. The bureau has prepared Y&D form 5c for the use of public works officers in arranging for inspection of materials under its cognizance at points of origin. The white (original) is sent to the inspector, the pink is for copies to the contractor and the manufacturer, the yellow is for the file of the person originating instructions, the green is for official file copies, the blue is for the inspection files of the bureau. Additional green copies to accord with the filing system requirements of the particular yard or station may be made as desired. The original and all copies shall indicate at the bottom to whom copies are sent. A space has been left at the head of the form for the insertion of the name and location of the yard or station and the date. Supplies of these forms will be furnished upon request to the bureau, indicating the number of sheets of each color needed for six months' use.

19-16. Request addressed to inspector. Formal request for inspection is addressed to the inspector on Y&D form 5c (original copy, white). This request must be accompanied by two copies of the contractor's orders and two sets of all pertinent papers. One set is retained in the inspector's office, and the other is furnished to his assistant in the field. Pertinent papers include specifications, letters, catalogues, circulars, cuts, or prints received with the bid and forming a part of and amplifying the contract and applying to the material to be inspected. Two sets of all amplification papers and two carbon copies of the contract will be forwarded by the bureau to the yard, at time distribution is made, for use in this connection. There should also be furnished the inspector two sets of all pertinent data from the bureau specification and two prints each of any bureau or yard drawings which may apply. Where Navy standard specifications are referred to, it will not be necessary to furnish copies to inspectors, since complete sets are always maintained in the files of their offices.

19-17. Copy of inspection request to contractor and to bureau. Carbon copies (pink) of requests to inspectors should be invariably forwarded to the contractor and the manufacturer in order that they may be fully informed as to what action has been taken, which office has been assigned to make inspection, and what will be required of them. An additional carbon copy (blue), with copy of order, should be invariably forwarded to the bureau in order that intelligent decisions may be rendered without delay and with full