— 77 — 



746. — Compte-rendu des m§mes. — Journ. OEcon,, 

 sept. 1756, p. 155-1S5. 



747. Hellzen (Pet. ). Om en lordbaefning uti Lidens Soc- 

 ken i Medelpad, d. 23 Maji 1782. — Kongl. Vetenskaps 

 Acad, nya handlingar faor Maonaderna Ok. Nov. Dec. aor 

 1782, p. 323-329, in-8°. Trad. msc. par M. Benloevv. 



748. Hennessy (H.). Researches in Physical Geology, 

 part 2. - Proceedings of the R. Soc. 1849, n° 73, p. 807- 

 809, march 15. 



749. — On the Connexion between Geological Theories 

 and the Theory of the Earth. — Report of the Brit. Assoc. 

 1852, part 2, p. 21. Une demi-page. 



750. Kenwood (W. Jory.). The metalliferous Deposits of 

 Cornwall and Devonshire, forming vol. V, of the Trans, of 

 the R. (jeol. Soc. of Cornwall. Penzance, 1843, in-8°. 



751. Herbin (J.-F.-Gab.). Essai d'un nouveau systeme 

 du monde eleve sur les mines des anciens systemes. Lyon, 

 1808, in-8'' de x-115|p. Ex. de Hericartde Thury. 



752. Herbinius (Joh.). Dissertationes de admirandis 

 mundi cataractis. Amstelodami, 1678, in-4°., fig. 



753. Herrgen. Investigaciones sobre los volcanos, del 

 ciudadano Patrin. — An. de Hist, nat., t. 2, p. 80-91, n" 4, 

 Junio 1800. 



754. Herschel (W.). Account of three Volcanoes in the 

 Moon. Philos. trans., 1787, t. 77, p. 229-231. 



755. Herschel ( John). On the Action of the existing Cau- 

 ses in producing Elevations and Subsidences in portions of 

 the Earth's surface. Extracts from Letters to Lyell and Mur- 

 chison. Babbage, the ninth Bridcjewater Treatise, 2nd edit., 

 note 1, p. 225-247. 



756. — On the Astronomical Causes which may influence 

 Geological Phoenomena. — Trans, of the R. geol. Soc, 2nd 

 ser., vol. 3, p. 292-299. Tir. a part offert par I'auteur en 

 1832. 



757.Hesselink (G. J.). De montium ignivomorum terr®- 



