( 797 ) 



Reasons suggestive ofmining on phjsicdL principles for gold and coal. Mel- 

 bourne, Walker, May et C°, 1875; br. in-18. 



Département of tlie Interior. Report of the United-States geological survey 

 ofthe ierritories F.-V. Hayden ; vol. YI. Washington, Government printing 

 Office, 1874; I vol. in-4°, relié. (2 exemplaires.) 



Washington Observations for 1873. Appendix I : The Uranian and Neptu- 

 nian Systems, invesligated vjith the 26 inch equatorial of the Uniled-States naval 

 Observatory; 6/ Simon Newcomb. Washington, Government printing Of- 

 fice, 1875 ; in-4°. 



Annual Report of the Uniled-States geological and geographical Survey oj 

 the territories embracing Colorado, being a report of piogress of the explora- 

 tion for the jear 1873; bj F.-V. Hayden. Washington, Government prin- 

 ting Office, 1874; 111-8°, relié. 



United-States Commission offish and fsheries ; part II : Report of the Com- 

 mjssîoner/or 1872 anrf 1873. Washington, Government printing Office, 1874; 

 in-8°, relié. 



Miscellaneous Publications ; n° 3 : Rirds of the northivest : a hand-book oj 

 the Ornithology , etc.; 6^'Elliott-Coues. Washington, Government printing 

 Office, 1874; in-8°, relié. 



Annual Report ofthe board of régents of the Smilhsonian Institution, etc. 

 Washington, Government printing Office, 1874; in-B", relié. 



Jnnales Academici CIOIOCCCLXX-CIDIDCCCLXXI. Lugduni-Batavo- 

 rum, 1875; in-4°- 



ERRATA. 



(Séance du 26 octobre 1875.) 



Page 'ji I, V ligne de la note, au lieu de répartis en douze groupes, lisez répartis en 

 trente-six groupes. 



Page ^45» ligne 26, au lieu de c, lisez b. 



Page 74*^' ligne i4, «« Heu de même étoile (c) que pour la planète Perrotin (voir ci- 

 dessus), lisez (c) (voir ci-dessus). 



C.R., 1875, i' Sem«(«. (T. LXXXl, N» 18.) Io4 



