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 

 Viribus et Motibus Fluidorura Commentarii ; with 12 plates, 4to. boards, 10-s Argentorati, 1738 



This work investigates many hydrodynamic 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 Mecanique analytiijiie in 

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

 W. ll r . R. HaU. 



6157 BERNOULLI (Jean [III]) LETTRES ASTRONOMIQUES; ou 1'on donne une Idee de PEtat actuel 

 de I'Astronomie Pratique dans plusieurs Villes de 1'Europe ; with 2 plates, sm. 8vo. boards, 4s Qd 



chez I'auteur, Berlin, 1771 



6158 BERT (Paul, de Vlnstitut) PRESSION BAROMETRIQUE : RECHERCHES de PIIYSIOLOGIE EXPERI- 

 MENTALE; with 89 woodcuts, thick roy. 8vo. cl., uncut, 10s Qd (p. F. 25) 1878 



Thi* 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 Experimental ' bears a sinister connotation in his case, sufficiently borne 

 out in the above work. 



6159 BERTHELOT (Pierre Eugene Marcellin, de Vlnstitut; F.R.S.) CHIMIE ORGANIQUE fondee 

 sur la SYNTHESE, 2 vols. roy. 8vo. sewn (SCARCE), 1. Is 1860 



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

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

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



6160 ESSAI de MECANIQUE CHIMIQUE fondee sur la THERMOCHIMIE ; with portrait and wood- 

 cuts, 2 thick vols. roy. 8vo. sewn, 1. 2s 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., 

 considerablement augmentee ; 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), 10s Edin. y 1791 



With interesting preface, and glossary. 



6163 SAGGIO di STATICA CHIMICA; Traduzione di V. DANDOLO, arrichita di Note, 2 thick vols. 



8vo. sewn, uncut (rare), 15s Como, 1804 



FIRST ITALIAN EDITION of this classic work, containing the author's investigations into the laws of chemical affinity, 

 which are exercising a powerful 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, 4 plates, 8vo. cl., uncut, 8s 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 powder. 



0165 : JOMARD (Edmond Francois) NOTICE sur la VIE et les OUVRAGES de CL.-L. BERTHOLLET, 



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. 



0166 BERTHQLON (Abbe Pierre) De I'ELECTRICITE des METEORES : Ouvrage dans lequel on 

 traite de 1'Electricite Naturelle en general, et des Meteores en particulier ; with Q plates, 2 vols. 

 Svo. contemporary French calf gilt, Is Qd 1787 



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



6167 - De I'ELECTRICITE des VEGETAUX, ses Effets sur 1 Economic des Vege"taux, leurs Vertus 



medico- et nutritivo-electriques, et principalement des Moyens de Pratique de Fappliquer utilement 

 si 1'Agriculture, avec UNVENTION d'un ELECTRO-VEGETOMETRE ; with 3 folding plates, 8vo. old 

 hf. calf (rare), with auto, of E. Solly, F.R.S., 10s Qd Didot Jeune, 1783 



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



6168 BERTHOTJD (Ferdinand ; F.R.S.) L'ART de CONDUIRE et de REGLER les PENDULES et les 

 MONTRES, a 1'Usage de ceux qui n'ont aucune Connaissance d'Horlogerie, avec les Regies, Observ- 

 ations et Calculs pour 1' Usage des MONTRES ASTRONOMIQUES, etc., 4 e [derniere] Ed., augmentee ; 

 with 5 folding copperplates, 12mo. sewn (rare), 12s Qd 1811 



6169 ESSAI sur 1'HORLOGERIE ; dans lequel on traite de cet Art, relativement k TUsage Civil, 



a I'Astronomie, et a la Navigation, en etablissant des Principes continues par 1' Experience, 2 e 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 ouvragos que Ton ait sur cet 

 art.' Brunei. 



6170 TRAITE des HORLOGES MARINES, contenant la Theorie, la Construction, la Main d'CKuyre 



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

 des Cartes Marines, et de la Determination des Longitudes en Mer ; with 27 fine folding plates by 

 Choffard, 4t<. sound copy in contemporary hf. vellum, uncut, (RARE), 1. 7* Qd 1773 



6171 ANOTHER COPY, hf. calf neat, 1. 5s 



' Bertboud eonstruisit les premieres horlnges marines . . . MM. de Fleurac et Borda, qui essayerent les premiers les 

 horloges marines de ce mecanioien, constaterent qu'apies une traversee de six semaines, elles marquaient la longitude en 

 mer a un quart de degre ou cinq lieues au plus sans que 1'explosion de 1'artillerie troublat la regularite de leurs mouve- 

 ments.' Biogr. Gen. 



It has been claimed that Berthoud was the first to apply compensation to the balance 01 the watc-h 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 DEFLEURIEU ; with 

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



Imprimerie Boy ale, 1773 



