Catalogue of Books on Bibliog. Typog. and Engraving in the N. Y. 



State Library. 

 Colonial Doc. Holland Doc. If. (770 pp.) Albany, 18.58. 4to. 

 Account of the remains of a fossil extinct reptile recently discovered 



at Haddonfield, N. J. (16 pp. from Proc. A. N. S.) Philadi • 



1859. 8vo. — From Isaac Lta. 

 Twelve .Memoirs of M. Jules Bienayme presented at various times to 



the French Academy. — From Mrs. E. Smith. 



Professor Treii;o hiid upon the table a mineral deposite from 

 the hot springs of Munnikurrun, in the immediiitc vicinity of 

 the eternal snows of the Himalayas, about SOO miles north of 

 Simla, in Upper India. The speciinen exhibited was obtained 

 from beneath the boiling; water of the sprinj^s, in November, 

 1867, by J. Tiiomas, M.D., and presented by him to Prof. 

 Tre<:;o. The temperature of these hot springs is 196° F. 

 which is above the boiling point of water at that place, it being 

 near 7000 feet abov^e the level of the sea. The rock formation 

 in the vicinity is gneiss and granite, accompanied with occa- 

 sional layers of chloritic or talcose slate. The specimen laid 

 befoie the meeting much resembles, in shape and general ap- 

 peaiance, a petrified fungus of vegetable growth. The surface 

 of the lower portion and stem is covei'ed with warty excres- 

 cences of a black colour, while the flat surfjice of the top has a 

 smooth coating of a browMiish yellow tinge. The interior is 

 composed of delicate, shining yellow fibres, closely aggregated, 

 snd generally radiating from the central portion or stem. Dr. 

 R. E. Rogers, upon examination of this mineral de))osite, finds 

 the dark coloured coating to be a mixture of the oxides of iron 

 and manganese; the fibrous portion is carbonate of lime co- 

 loured by oxideof iron; and the smooth top coating is carbon- 

 ale of lime with a smaller pi"oj)ortion of oxide of iron. 



Dr. R. E. Rogers called the attention of the Society to some 

 facts in electricity, and exhibited an instrument calculated for 

 the development of induced electricity, being a modification of 

 Rumkorff's coil, devised by Ritchie. He described the opera- 

 tion of this instrument in producing primary and secondary 

 currents, and in arresting or absorbing the backward current, 

 so as to allow a free discharge of the forward current; and ex- 



