476 HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 



9464 [HORNOT (Antoine)] TRAITE des ODEURS, Suite du Traite de la Distillation, par M. Dejean, 

 Distiilateur, nouvelle Edition, 12mo. old mottled calf gilt, 10s 6d 1788 



9465 [ ] TRAITE RAISONNE de la DISTILLATION ; ou la Distillation reduite en Principes, avec un 



TRAITE des ODEURS, par M. DEJEAN, Distiilateur, 12mo. old calf gilt (rare), 12s Qd 1753 



First edition of a well-known work, which went through several editions. 



9466 HOR-TON (Frank) On the DISCHARGE of NEGATIVE ELECTRICITY from HOT CALCIUM and 

 from LIME, with 5 diagrams, roy. 4to. (pp. 22), sewn, Is 6d 1907 



9467 HORTON (Richard) The COMPLETE MEASURER : the Measurement of Boards, Glass, Timber, 

 and Stone, cr. 8vo. cL, 2s Qd (p. 6s) 1862 



9468 HOSKOLD (H. D., C.E.) The ENGINEER'S VALUING ASSISTANT: a Practical Treatise on the 

 Valuation of Collieries and other MINES ; with Rules, Formulae, and Examples, Valuation Tables, 

 etc. etc., with Introduction by PETER GRAY, 2nd Edition, 8vo. cL, 5s (p. 7s 6d nett) 1905 



9469 PRACTICAL TREATISE on MINING, LAND and RAILWAY SURVEYING, ENGINEERING, etc., 



containing the Errors of the Magnetic Needle ; Practical Geometry and Trigonometry ; with 

 Description, Use, and Adjustments of the MINERS' new TRANSIT THEODOLITE, etc. etc., with 2 

 plates, 8 folding plans, and 74 woodcuts, roy. 8vo. cL, 7s 6d (p. 1. 10s) 1863 



HOSPITALIER (Edouard, de rinstitut), An INTERESTING and VALUABLE COLLEC- 

 TION on ELECTRICAL SCIENCE formed by, and consisting of SMALLER WORKS, 

 BROCHURES, EXTRACTS from SCIENTIFIC PERIODICALS, MANUFACTURERS' CATALOGUES, 

 MANUSCRIPTS, and his copious CORRESPONDENCE with Scientists and Electricians, 

 chiefly in FRENCH and ENGLISH, all arranged, dated, and sorted by M. Hospitaller 

 himself ; as under : 



9470 ACCUMULATEURS : THE"ORIE. RE"SULTATS d'ExpERiENCES. APPAREILS ACCESSOIRES; 

 a very extensive Collection, including many LEGAL DOCUMENTS of Patent Cases, 

 CORRESPONDENCE from and with the various Inventors, etc. etc., 5. 5s a. d. 



9471 AERODYNAMIQUE : AE"RONAUTIQUE. ANE"MO-MOTEURS. MOULINS a VENT. RESIST- 

 ANCE de 1'AiR. ACOUSTIQUE. AIR LIQUIDE. LIQUEFACTION des GAZ. BASSES TEMPERA- 

 TURES. APPAREILS FRIGORIFIQUES ; a large and interesting Collection, 3. 3s a. d. 



9472 ARC ELECTRIQUE: LAMPES a ARC. LUMIERE ELECTRIQUE. ARC VOLTA'IQUE, 

 REGULATEURS. FOYERS LUMINEUX ELECTRIQUES. CURIOSITE"S de la LAMPISTERI-E 

 ELECTRIQUE ; a very large and interesting collection, 4. 4s a. d. 



9473 CHALEUR. THERMODYNAMIQUE : CONSTANTES THERMIQUES. MOTEURS THER- 

 MIQUES. THEBMOMETRFE, PYROMETRIE, CALORIMETRIE. ENTROPIE ; a large and 

 interesting collection, containing interesting Correspondence, and a manuscript 

 ' Essai sur 1'Analogie des Lois Thermiques et Electriques ' by Hospitalier, 4. 4s a. d. 



9474 COMPTEURS d'ELECTRICITE : G^NERALITES, CLASSIFICATION. COMPTEURS pour 

 la DISTRIBUTION d'ENERGiE ELECTRIQUE. COMPTEURS de QUANTITE d'ELECTRiciTE" 

 (Compteurs Electrolytiques. Compteurs Mecaniques). COMPTEURS d'ENERGiE 

 Electrique. MESURES ELECTRIQUES ; a large and very valuable Collection, containing 

 a large amount of MS. and Official Matter, Correspondence with Inventors, etc., 

 8. 8* a- d. 



9475 CONDUCTEURS et RESISTANCE d'ELECTRICITE: CONDUCTEURS, ISOLANTS, 

 DIELECTRIQUES. CANALISATION de 1'ENERGiE ELECTRIQUE; a large* and interesting 

 Collection, 2. 2s a. d. 



9476 ECLAIRAGE au GAZ: FABRICATION et EPURATION. Acetylene; a large and 

 very interesting Collection, containing much MS. matter and correspondence on 

 the Welsbach Light, 3. 3s. a. d. 



9477 GAZOGENES, THERMOGENES et VAPORIGENES: COMBUSTION, COMBUSTIBLES. 



SURCHAUFFEURS. ALUMINOTHERMIE. MOTEURS THERMIQUES. MOTEURS a VAPEUR. 



CONDENSATION. CHAUDIERES a VAPEUR ; a very large Collection, $3. 3s a. d. 



9478 LOCOMOTION ELECTRIQUE : HISTORIQUE, CLASSIFICATION. EFFORTS de 

 TRACTION. FREINAGE. TRAMWAYS. ACCUMOBILES; a very extensive and important 

 Collection, especially on Electric Tramways, 7. 7s a. d. 



9479 : CHEMINS DE FER (Locomotive Aatonome. Locomotive 



Heilmann). CHEMINS MOBILES. TELPHERAGE. TOUAGE. NAVIGATION ELECTRIQUE ; 

 an extensive Collection, 1. 15s a- d. 



9480 MAGNETISME : THEORIES. AIMANTS PERMANENTS. MESURES MAGNETIQUES 

 (Permeabilite. Induction. Hysteresis. Mesures des Flux. Champs Magnetiques). 

 PROPRIETE"S MAGNETIQUES des FERS et des ACIERS, du NICKEL, BISMUTH, COBALT, etc. 

 APPLICATIONS ELECTRO-MAGNE"TIQUES ; a very large collection, consisting mainly of 

 Contributions to English Scientific Journals, 2. 12s 6d a. d. 



