illiam BY THE REV. T. W. WEBB, M.A. F.R.A.S. VICAR OF HARDWICK, HEREFORDSHIRE THIRD EDITION, REVISED AND ENLARGED All rights reserved Many things, deemed invisible to secondary instruments, are plain enough to one who knows how to see them' SMYTH When an object is once discovered by a superior power, an inferior one will suffice to see it afterwards SIR W. HERSCHEI Inertia mors est philosophia-vivamus nos et exerceamur KEPLER Sic enim magnalia sapientiæ suæ decoravit Is, qui est ante sæculum et usque in sæculum: nihil redundat, nihil deficit, nec locus est censuræ cujusquam. Quam desiderabilia opera ejus! * ** et quis saturabitur videns gloriam eorum? O qui lumine naturæ desiderium in nobis promoves luminis gratiæ, ut per id transferas nos in lumen gloriæ; gratias ago Tibi, Creator, Domine, quia delectasti me in factura tua, et in operibus manuum tuarum exultavi KEPLER |