xii LIST OF AUTHORITIES CONSULTED. 



Poggendorff (J. C.) Biographisch-literarisches Handworterbuch zur Gescliiclite der exakten 



Wissenschaften, 2 vols. 1863. 



Geschichte der Physik. 1879. 



Preston (T.) The Theory of Heat. 1904. 



The Theory of Light. 1895. 



Riccardi (P.) Biblioteca Matematica Italiana. 1893. 



Ponalds Library, Catalogue of the. 1880. 



Roscoe (Sir H. E.), and C. Schorlemmer. Treatise on Chemistry. Vols. I-II. 1894-7. 



Rose (H. J.) New General Biographical Dictionary. 12 vols. 1848-50. 



Royal Society of London, Record of the. 1902. 



Stuart (R.) Historical and Descriptive Anecdotes of the Steam Engine. 2 vols. 1829. 



Thompson (S. P.) Elementary Lessons in Electricity and Magnetism. 1895. 



Notes on the Be Magnete of Dr. William Gilbert. 1900-1. 



Thurston (R. H.) History of the Growth of the Steam Engine. 1879. 



Todhunter (I.) History of the Mathematical Theories of Attraction and of the Figure of the 



Earth. 2 vols. 1873. 



History of the Mathematical Theory of Probability. 1865. 



Histroy of the Progress of the Calculus of Variations. 1861. 



History of the Theory of Elasticity. 3 vols. 1886-93. 



Turnor (C. H.) Astra Castra- 1865. 



Waite.(A. E.) Lives of Alchemystical Philosophers. 1888. 



Watt (R.) Bibliotheca Britannica. 4 vols. 1824. 



Wilde (H. E.) Geschichte der Optik. 2 vols. 1838-43. 



Wolf (H.) Geschichte der Astronomie. 1877. 



Wolf (R.) Handbuch der Physik, Geodasie und Astronomie. 2 vols. 1870. 



Wood (E. J.) Curiosities of Clocks and Watches. 1866. 



Messrs. So t her an' s Catalogues referred to m the Index. 



No. 770. Catalogue of Rare and Standard Books on Exact and Applied 

 Science, including the Scientific Portion of the Library of the late Rt. Hon. Sir James 

 Stirling, F.R.S., Lord Justice of Appeal ; and Selections from those of George Rennie, 

 C.E., F.R.S. (1791-1866) ; Samuel Roberts, F.R.S., sometime President of the London 

 Mathematical Society ; and of some other well-known Scientists. 1918 



Containing 3883 numbers on 248 pages, catalogued under 13 different subject-headings. 



'No. 772. Bibliotheca Viatica: Catalogue of an extensive Collection of Second-hand 

 Books on the Road, the Rail, the Water, and the Air, including old Atlases and Maps, 

 early Road Books, Coaching Books, and Books on early Canal and Railway Work, Steam 

 Navigation, Bridge Building, the Post Office, and Ballooning, and a scarce Collection of 

 Books on Cycling. 1919 



Containing 939 numbers on 64 pages, catalogued under 12 different eubject-headings. 



ISo, 773. Annotated and Classified Catalogue of Rare Books on Exact and 

 Applied Science, including the Library of the late Professor Olaus Henrici, 

 F.R.S. , and the more important Portion of that of Gilberto Govi (1825-89), Professor of 

 Physics, University of Naples, removed during War Time from Naples, and including 

 many Works of great historical Importance and Rarity. 1919 



Containing 3336 numbers on 256 pages, catalogued under l4 different subject-headings. 



ERRATUM. 



Page 5, no. 94 and page 292, no. 5750, notes — read electric current instead of electro-motive force. 



