( 39» ) 



Mines and minerai Statistics. Jnmtal Report of the deparlemenl of mines 

 New-South- ff 'aies, for llie )-cnr 187G. Sydney, Ch. Potter, 1877; 111-4°. 



Tbeprogress and resoiirces ofnewSoulk-PFales; 6jCh. Robinson. Sydney, 

 Ch. Polter, 1877; br. in-8". 



1875-76. Neiv-South-Wales. Raihvays of New-Soulh-PFales. Report on 

 their construction and workincj, Jrom 1872 to 1875 inclusive; by JoHPf Rae. 

 Sydney, Th. Richards, 1876; in-S". 



Memoirs of ihe geolocjical Suii'ey of India; vol. XIII, Part I, II. Calcutta, 

 1877; in-8°. 



Memoirs oftlie geolocjical Siirvey of India. Palœontologia indica; ser. II, 

 2 Jurassic {Liassic), flora of the rajmahal group, in the rajmahal hills ; by 

 0. l'Ei.sTMANTEL. Calculta, 1877; 2 br. in-4°. 



Records of the geological Survey of India; vo!. X, Part I, II, 1877. Cal- 

 cutta, 1877; 2 br. in-8". 



Harbour bars : the cause of their formation and hoiu they mnybeperma- 

 nently eut aivay by natural force; by II. -F. Rnapp. Loiidon, 1878. br. in-8". 



Sulviriale. Mtmoria dell' Ing. V. Cekruti. Sans lien, ni date; br. in-4°. 



Considerazioni sui calori specifici; jier l'ing. V. Cerrdti. Roma, Salviucci, 

 1877-, br. in-4". 



Intorno aile piccole oscillazioni di un corpo rigido intieramenle libero. Me- 

 inoria dell' Ing. V. Cerruti. Roma, Salviucci, 1877; br. in-8°. 



(Ces trois dernières brochures sont présentées par M. Yvon Villarceau). 



Atti deir Accademia pontificia de' Nuovi Lincei, compilati dal Segretario, 

 anno XXX, Scssione V-VP. Roma, tipogr. délie Scienze niatematiche e 

 fisiche, 1877; 2 liv. in-4". 



Studi sulla cliinatologia délia valle d' Aosta ; pcl P. Fr. Denza. Torino, 

 tipogr. Giuseppe, 1877; in-8". 



5»//' origine dell' acido borico e dei borati. Considerazioni di A. d'A- 

 ciiiARUi. Pisa, tipogr. Nislri, 1H78; br. in-8". 



Ouvrages hf.çus dans la siîawce du ii février 1878. 



Détermination of the nnniber of electrostatic units in the electromagvetic 

 unit uindc in the phjsical laboratory of Glascov Universily. — On the rigi- 

 dity of the enrtb. — On norlr.x motion. — Measurements of spécifie induclive 



