HENRY SOTHERAN & CO., 140, STRAND, W.C., and 43, PICCADILLY, W. 671 



13413 PL A YF AIR (John, f.r.s.) Works, with Memoir [by the Editor and Lord Jeffrey ; edited 

 by James G. Playfair], 4 thick vols. 8vo. hf. calf [joints broken) ; scarce, £1. 5* Edin., 1822 



" Containing all the author's works and papers, save ' Elements of Geometry' and ' Outlines of Natural Philosophy ', 

 and includinj^ his celebrated 'Illustrations of the Huttonian Theory of the Earth', 'a model of purity of diction, 

 simplicity of style, and clearness of explanation, which not only f^ave p ipularity to Hutton's theory, but lielped to create 

 the modern science of geology ' (/>. -V. B.), and the valuable ' Progress of the Mathematical and Physical Sciences.' 



13414 Elements of Geometry, containing the First Six Books of Euclid, with Supplement on 



the Quadrature of the Circle, and the Geometry of Solids, also Elements of Plane and 

 Spherical Trigonometry, 2nd Edition, enlarged, voith numerous diagrams^ 8vo. old sheep 

 (aamaged), Ss ibidem, 1804 



13415 '— Third Edition, enlarged, irith numerous diagrams, 8vo. old sheep {damaged), 3s ib., 1810 



13416 Eighth Edition, with Additions by William Wallace, f.r.s.e., ivith mimerous 



diagrams, 8vo. calf, 4s ib., 1831 



13417 Ninth Edition, with Additions, by John Davidson, with numerous diagrams, 8vo. 



hf. calf {back damaged), 3* ib., 1836 



13418 On the Origin and Investigation of Porisms, with 2 folding copperplates, 4to. (pp. 



b3),sewn, bs^d [ib., 1792] 



'A learned i>ai)er, containing a number of curious observations on the geometry of the anoitnts in geneial, as well as 

 forming a complete treatise as it were on poi isms in particular.'— y.*/-. C. HutUm, F.H.S., who quotes extensively iJom 

 tlie above paper in his Philosophical ami Matluiiuitical Dldionunf. 



13419 Outlines of Natural Philosophy : Lectures in the Univei-sity of Edinburgh, first 



edition, ^vith 6 plates, 2 vols. 8vo. brown calf gilt, bs ib., 1812-14 



13420 PLAYFAIR (Lyon first Lord, f.r.s.) A" Century of Chemistry in the University of 

 Edinburgh, 8vo. (pp. 30), seu^n, with inscr. to Prof. Tyndall {as below), 35 Edin., 1858 



'Dr. Tyndal [x'c] from the Author.'— 7nsc/-. uncoctr. It was the author's introductory lecture on his appointment 

 to the chair of chemistry in Edinburgh University. 



13421 On the Food of Man under different Conditions of Age and Employment, with folding 



table, 8vo. (pp. 4), sewn, \s M 1853 



13422 On the Gases evolved during the Formation of Coal, roy. 8vo. (pp. 1-16), seicn, 



\s 6d n. d. 



This memoir was unknown to Poggendorff. 



13423 Industrial Instruction on the Continent, roy. 8vo. (pp. 54), sewn, with auto, of 



Prof Hilary Bauennan, Is 6d 1852 



13424 Ori the National Importance of Studying Abstract Science with a View to the 



healthy Progress of Industry, 8vo. (pp. 29), unbound. Is Gd 1851 



13425 On the Nitroprussjdes, a New Class of Salts, 4to. (pp. 42), seivn, bs 1849 



13426 Another Copy, sewn, ivith author's inscr., 6s 



'His most important investigations are those on the nitroprussides, a new class of salts which he discovered, 

 etc.'— D. N. B. 



13427 Note on some Numerical Relations between the Specific Gravities of the Diamond, 



Graphite, and Charcoal Forms of Carbon, and its Atomic Weight, 8vo. (pp. 8), sewn, \s Qd 



{Edin., 1860] 



13428 [Presidential] Address to the British Association for the Advancement of Science, 



8vo. (pp. 26), sewn, \s 6d 1885 



13429 , and James Alfred WANKLYN, f.r.s.e. : On a Mode of takinj,' the Density of 



Vapour of Volatile Liquids, at Temperatures below the Boilin<; Point, with 2 woodcuts, 4to. 

 (pp. 25), sewn, 3s Edin., 18*Jl 



THE first graphic STATISTICS : 



134.30 PLAYFAIR (William, Inventor of this Method of stating Accounts) Lineal Arithmetic, 

 applied to shew the Progress of the Commerce and Revenue of England during the Present 

 Century, with 33 copperplates of graphic statistics {mostly coloured), 8vo. old sheep {binding 

 damaged), \0s %d ' 1798 



' Not arithmetic, but plates arranging the several matters in curves, in the manner now much more familiar than it 

 was then.'— iVo/. ih Morgon. 



The book is probably the first instance of the use of graphic statistics, of which in the preface the author claim.^ to be 

 the inventor. He was the younger brother of .John Playfair the geologist, and had a struggling, rough and tumble life, 

 from his first employment as a draughtsnmn at Boulton and Watt's to his death in London in 18-_'3. He was in Paris in 

 1789 and probably took part in the taking of the Bastille, but afterwards quarrelled with the Revolution. The above 

 work is not mentioned in D. .V. B., but has peculiar interest in connexion with the invaluable method which it introduced, 

 and which was apparently still little used in Prof, de Morgan's day. It was employed however to flue effect by Florenck 

 XiGHTisGALE, who fouud her ' coxcombs ' trump cards against Lord Panmure, and the best of all means of bringing the 

 state of the Army in barracks home to the English peoiile. 



13431 PLXJCHij (Abbe Noel Antoine) The History of the Heavens, considered according to the 

 Notions of the Poets and Philosopheis, compared with the Doctrines of Moses, translated by 

 J. B. de Freval, with numerous copperplates. 2 vols. 8vo. old calf, Qs Qd 1740 



' La premiere partie est presque une mythologie complete, fondce sur des idees neuves, Juais simples et ingenieuses ; la 

 seconde partie est I'histoire des idees philo-sophiques sur la formation du monde.'— Biofli/-. Gin. 



13132 [ ] Spectacle de la Nature : or Nature D.splay'd: Discourses on such Particulars of 



Natural History as were thought most proper to excite the Curiosity, and form the Minds of 

 Youth, translated from the original French by [Samuel] Humpurevs, 4th Edition, with numer- 

 ous folding copperplates, 6 vols. 8vo. old calf {cracked), Ms 6d 1740 

 'Ouvrage'instructif et agr6able. . . . C'est un tableau vivant et anime de Toeuvre de la creation '.—^iogr/-. Oen. The 

 work U dedicated to the vouthful William Augustus. Duke of Cumberland, known after 1740 as ' the Butcher'. 



13433 POCHHAMNER (Leo Aug-uat ; Univ. Kiel) 'Ueber Relationen zwischen hypergeo- 

 metrischen Integralen Ntkr URDNUNG, 4to. (pp. 2i),sewn, 2s [Berlin, 1870] 



13434 De JSuPERFiciEi Undarum Derivations : Dissertatio Inauguralis, 4to (pp. 26), sewn, 



2s ibidem [1863] 



