314 HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 



6156 BERNOULLI (Daniel; Univ. Basle, son of Jean Bernoulli, f.r.s.) Hydrodynamica, sive de 

 Viribiis et Motibus Fluidoruiii Commentarii ; with 12 plates, 4to. boards, 10s Argentorati, 1738 



This work investigates many hydrodynainic problems of great importance, the results of which may be said to have 

 given the science of hydrodynamics its present form. Among others it first develops a theory of hydraulic pressure, 

 expanded later by Coriolis, Navier, and Weisbach. ' His chief work ... It resembles Lagrange's Mccuniqne analytir/ue in 

 being arranged so that all the results are consequences of a single principle, namely, in this case, the conservation of energy." 

 —W. W. R. Ball. ^-^ 



6157 BERNOULLI (Jean [III]) Lettres Astronomiques ; oii I'on donne une Idee de I'Etat actuel 

 de I'Astronoinie Pratique dans plusieuis Villes de I'Europe ; with 2 plates, sm. 8vo. hoards, 4^ Qd 



chez Vauteur, Berlin, 1771 



6158 BERT (Paul, de VInsiitut) Pression Barometrique : Recherches de Piiysiologie Experi- 

 MENTALE; irith 89 woodcuts, thick roy. 8vo. cl., uncut, 10* ^d (p. F. 25) 1878 



Thix work, the first treatise on the influence of atmospheric pressure on living beings, received the prize of the French 

 Academy. The author's ' Prix de Physiologie Experimeutale ' bears a sinister connotation in his case, sufficiently borne 

 out in the above work. 



6159 BERTHELOT (Pierre Eugene Marcellin, de VInstitut; f.r.s.) Chimie Organique fondle 

 sur la Synthiise, 2 vols. roy. 8vo. sewn (SCARCE), £1. 1* 1860 



' He soon directed his attention to the synthesis of organic compounds, which at that time had been hut little studied, 

 and his comprehensive work, Chimie Organique fondee sur la Synthese, gave a detailed account of the observations and 

 discussions in this branch of the science.' — Prof. E. v. Meyer. 



6160 EsSAl de Mecanique Chimique iondee^wrlduTR^RyiOCVLimiE.; with portrait and wood- 

 cuts, 2 thick vols. roy. 8vo. sewn, £1. 2* Qd (p. F. 45 nett) 1879 



In this monumental work the author laid the foundation of Thermo-Chemistry. 



6161 — ^ — , et Emile JUNGFLEISCH : Traite Elementaire de Chimie Organique, 2^ Ed., 

 considerableinent auojmentee ; with numerous woodcuts, 2 vols. 8vo sewn, 5s (p. F. 25 nett) 1881 



6162 BERTHOLLET (Claude Louis Comte ; f.r.s.) Essay on the New Method of Bleaching: 

 with the Nature, Preparation, and Properties of Oxygenated Muriatic Acid, and Observations and 

 Experiments on the Art of Dying [sic] with Madder, trans., with Notes, by Robert Kerr, 

 F.R.S.E., 2nd Ed., with folding plate, 12mo. old sheep {Joints cracked), lOs Edin., 1791 



With interesting preface, and glossary. 



6163 Saggio di Statica Chimica; Traduzione di V. Dandolo, arriehita di Note, 2 thick vols. 



8vo. sewn, uncut (rare), I5s Como, 1804 



FiR.sT Italian Edition of this classic work, containing the author's inve.stigations into the laws of chemical affinity, 

 ■which are exercising a i>owerful influence still. 



6164 , (and Amedee B.) Elements of the Art of Dyeing and Bleaching, trans., with Notes 



[pp. 102], by Andrew Ure, f.r.s. ; new Edition, revised and corrected by an Experienced 

 Practical Dyer and Calico Printer, i plates, 8vo. cl., uncut, 8.<f Qd 1841 



The best English translation of this classic work. Berthollet first used chlorine gas ('dephlogisticated marine acid ') 

 for bleaching purposes, which opened its great future to the herbage-devastating manufacture of bleaching i)owder. 



6165 : JoMARD (Edmond Fran9ois) Notice sur la Vie et les Ouvrages de Cl.-L. Bkrthollet, 



8vo. (pp. 91), sewn, 5s Anneci, 1844 



This work, originally printed in 1825, was suppressed by the obscurantist government of Charles X, It contains a list 

 of 88 works and memoirs of Berthollet's. 



6166 BERTHpLON (Abbe Pierre) De I'h^LECTRiciTE des Meteor es : Ouvrage dans lequel on 

 traite de I'Electricite Naturelle en general, et des M^teores en particulier ; with 6 plates, 2 vols. 

 8vo. contemporary French calf gilt. Is 6d 1787 



The author was a friend of Benjamin Fnmklin, and devoted much time t,o the study of electrical phenomena. 



6167 De I'Electricite des Vegetaux, ses Effets sur 1 Economie des Veg^taux, leurs Vertus 



medico- et nutritivo-^lectriques, et principalenient des Moyens de Pratique de I'appliquer utilement 

 a I'Agriculture, avec I'Invention d'un ELECTRO-V^GETOMliTRE ; with 3 folding plates, 8vo. old 

 hf. calf {rare), with auto, of E. Solly, F.R.S., IQs Qd Didot Jeune, 1783 



This is probably the iir.st work investigating the effect of electricity on the growth of plants. 



6168 BERTHOUD (Ferdinand; f.r.s.) L'Art de Conduire et de Regler les Pkndules et les 

 MoNTRES, a rUsage de ceux qui n'ont aucune Connaissance d'Horlogerie, avecles Regies, Observ- 

 ations et Calculs pour 1' Usage des Montres Astronomiques, etc., 4° [dernifere] Ed., augmentee ; 

 'With 5 folding copperplates, 12mo. sewn {rare), \2s 6d 1811 



6169 ESSAI sur I'Horlogerie ; dans lequel on traite de cet Art, relativement k I'Usage Civil, 



a I'Astronouiie, et a la Navigation,en ^tablissant des Principes conlirmes par I'Experience, 2^ Ed. ; 

 with 38 folding plates by Choffard, 2 vols. 4to. contemporary tree-calf gilt {joints mended, but 

 a FINE COPY) ;" rare, £2. 2s ' 1786 



Last and best edition of the author's most important work, *un des plus estimes ouvrages que Ton ait sur cet 

 Vivt.'— -Brunei. 



6170 Traite des Horloges Marines, contenant la Theorie, la Construction, la Main d'O^uyre 



de ces Machines, et la Manibre de les Eprouver. pour parvenir, par leur Moyen, a la Rectification 

 des Cartes Marines, et de la Determination des Longitudes en Mer ; with 21 fine folding plates by 

 Choffard, 4t'\ sound copy in contemporary hf. vellwn, uncut, (rare), £1. 7* 6c? 1773 



6171 Another Copy, hf calj neat, £1. 5^ 



' Berthond construisit les premieres horloges marines . . . MM. de Fleurac et Borda, qui essayerent les prenuers les 

 horloges marines de ce mecanicien, constaterent qu'apres une traversee de six seniaines, elles marquaient la longitude en 

 mer a un quart de degre ou cinq lieues au plus sans que I'explosion de I'artillerie troublat la regularite de leurs mouve- 

 ments.'— iJiof/r. Gen. 



It has been claimed that Berthoud was the first to ap))ly compensation to the balance ot the watch— the final step 

 in the production of the chronometer; an invention generally ascribed to Harrison. He undoubtedly made the first 

 pocket watch with compensation curb, and moreover invented an escapement in which the balance makes two vibrations 

 in the time that one tooth only of the wheel escapes. 



6172, : Voyage fait par Ordre du Roi en 1768 et 1769, a differentes Parties du Monde pour 



Eprouver en Mer les Horloges Marines inventees par F. B., par d'EvEUX de Fleurieu ; with 

 ^ folding plates and maps, and 4 tables^ 2 vols. 4to. contemporary hf. calf gilt, \2s 



hnprimerie Royale, 1773 



