HENRY SOTHERAN c<: CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 681 



U595 PRAT (Louis) Nouveau Pkockde de Tirage Mecanique des Foyers, par Aspiration a 

 Travail Constant ; n-ith 6 illustrations^ roy. 8vo. (pp. 20), sevm, 2s 6d 1898 



1:^96 FBATICA: cioe NUOVA Inventionk di Conteggiare, ridotta a MoDO tanto facile, the 

 ognuno potrh, far o^ni gran Conto, si in vendere, come in comprare, sia k Misura, 6 Peso, o in 

 qualsivoglia altro Modo ad ogni Sorts di Prezzo, e Moneta per tutte le Parte del Mondo. ecc. : 

 Aggionta di due Tavole utilissinie alia Pratica, 6 Nuova Inventione di Conteggiare, nelle quali 

 si ha il Mane^gio de' Soldi, e Dinari in varie Sorti di Conti— 2 vols. .S2mo. in 1, old vellum [first 

 title soiled, otherwise a smind copy), £2. 2s Milano, Gioseffo Marelli, s. a. 



A very rare edition, unknown to Riccardi. The second volnnie is not mentioned by him at all. All these olfiJ 

 multiplication tables have now become very lare, nearly all having been destroyed by constant thumbing. 



i:i597 PRATT (John Henry, /'e//o?r of Cains : f.r.s. ; Archdn. of Calcutta) The Mathematical 

 Principles of Mechanical Philosophy, and their Application to the Theory of Universail 

 Gravitation, with 5 folding plates, 8vo. cl., 4s Cambridge, 18;}6 



This work was largely made use of by Prof. Todhunter in his • Analytical Statics.' 



18598 Second [last] Edition, revised and improved, with 5 folding plates, thick 8vo. calf, 6s 



(p. £1. Is) ibidem, 18*1 



i;^99 Reprint, Svo. hf. cl., 6* ibidem, Macmillan, Barclay, and Macmillan, 1845 



This vrbatim reprint of the second edition was one of the flrst books issued by Daniel Macmillan, after he be^aiv 

 publishing at Cambridge. 



i;i(H)o Another Copy ; also, Carmichael (Robert, pr., m.r.i.a.) Treatise on the Calculus 



of Operations, to facilitate the Processes of the Ditt'erential and Integral Calculus and the 

 Calculus of Finite Dift'erences, with diagrams — 2 vols. 8vo. in 1, hf. calf, 14* 1845-55 



Carmicliael's work 'contains some interesting theorems respecting attraction.'— Pro/. Todhunter. 



i;i601 Another Copy of the first work; with : Gregory (Duncan Farquharson ; first editor of 



the ' Cambridge Mathematical Journal') Examples of the Process of the Differential and 

 Integral Calculus, 2nd [last] Edition, by William Walton, with \ folding plates— 2 vols. 

 Svo. '\n\,hf. roan (poor copies). Is 6d 1845-6 



' Gregory's is a work which produced a great change for the better in the Cambridge mathematical books. It is the- 

 first in which constant use is made of the method known by the name of the separation of the symbols of operation, an6i 

 the author has enlivened its pages by occasionally introducing historical notices of the problems discussed.'— D. A'. B. 



1.S602 Treatise on Attractions, Laplace's Functions, and the Figure of the Earth, 



4th [last] Edition, 7aith diagrams, post 8vo. cl. (scarce), 10s 6d 1871 



Last Edition-, and now out of print and scarck. 



' The ilistinction between the coefficicntti &nd /unct ions of Laplace is given for the first time to my knowledge in Pratt's. 

 ' Figurt- of the Earth '.'—Prof. Todhunter. 



Archdeacon Pratt was second son of Josiah Pratt, pr., one of the founders of the Church Missionary Society. He- 

 was Third Wrangler in 1833, and went to India as Bp. Daniel Wilson's chaplain, and worked there, highly esteemed by 

 Bp. Milman, till his death in 1871. 



1360:i PBATT (Mason D.), and O. A. ALDEN: Street-Railway Roadbed, with 157 illustra- 

 tions, roy. 8vo. cl., 5s (p. 8s 6d nett) New York, 189S 



13604 PRATT (N. A., M.D., Oglethorpe Univ., Ga.) Ashley River Phosphates: History of the Marls 

 of South Carolina, and of the Discovery and Development of the Native Bone Phosphates of the 



Charleston Basin, etc. etc., roy. 8vo. (pp. 42), sewn, with author's inscr., 2s 6d Philadelphia, 186S 



13605 PRAY, Jr. (Thomas) Twenty Years with the Indicator : a Practical Text-Book% with no- 

 complex Formului ; with the Author's Original and Correct Application of the Theoretical Curve, 

 to show exactly where the Steam Valve closed and whether Valves leak or not, etc. etc., with 

 many Tables and Hints, newly arranged, with 189 illustrations, large roy. 8vo. cl., Qs 6rf(p. 16s) 



New York, 1896 



i;;«K)6 PREBLE (Rear-Adml. George Henry, u.s.N.) Chronological History of the Origin and 



Development of Steam Navigation, 1543-1882, large 8vo. cl., 9s (p. 18*) Philadelphia, 1883 



' This volume is believed to contain more facts relating to the progress of steam navigation over the world than have 

 ever been jrathered together in one hook.'— Fr>'facc. Pp. 414-21 contain a bibliography. 



1:^07 PREDIGER (C.) Ueber die Genauigkeit barometrischer Hohenmessunsen, impl. 8vo. 

 (pp. 40), sewn, 2s Clausthal, l:86f> 



1360S PREECE (Sir William Henry, f.r.s. ; g.p.o. ; inventor, on the Flat Holm, of unreless tele- 

 graphy) Lectures on a System of Telegraphy as applied to Railway Purposes, folio 

 (pp. 3:i), hf calf, OS [1874] 



Bound up with the above is : London and South Western Ry. Special Instructions to Signalmen and all others con- 

 cerned for the Electric Train Signalling from Station to Station on Double and Single Lines of Railway (pp. lb), vnth 

 map ('73). 



13609 On the Maintenance and Durability of Submarine Cables in Shallow Waters, 



with Abstract of the Discussion at Inst. C.E., edited by Charles Manby, f.r.s., and James 

 Forrest, a.i.c.e., with folding plate, 8vo. (pp. 82), .sewn. 3* 6rf 1862 



1.5610 Presidential Address to the Institution of Civil Engineers, 8vo. sewn, Is&d 1898 



1.5611 Watt and the Measuremi:nt of Power, i(t'<A 2 i7/w^<ra<ton*, 8vo. (pp. 13), sewn, with 



author's inscr., Is 6d 1897 



13()12 , and Julius MAIER : The Telephone, ivith photographic front. ^ plate, and 29€ wood- 

 cuts, thick cr. 8vo. cl. (o. p.), 4s (]k12s 6d) ' 1889 



laoi.i , and Sir James SIVEWRIGHT, g.p.o. : Telegraphy, first edition, with 161 wood- 

 cuts, post 8vo. c/., 2s 1876 



1.%14 Ninth Edition, enlarged, with 255 woodcuts, post 8vo. cl., 2s 6d 1891 



13615 New Edition, greatly enlarged, with 267 woodcuts, post Svo. cl., 35 6d (p. 7* Orf) IWI 



' An excellent manual '.—Prof. .S/'h-an?;.? Thom-p.^on. 



13616 , and Arthur J. STX7BBS, g.p.o. ; Manual of Telephony, with S33 woodcuts, thick 



cr. Svo. cl. (o.p.). Qs 6d (p. 15*) 1893 



A new edition of Preece and Jlaiers ' Telephone '. 



