6(34 



Letters of acknowledgment were received from the Royal 

 Society, Ediuburgli, Dec. 187G (XV, ii, 94, 95) ; and the 

 McGill University, Montreal, April 5, 1876. 



Donations for the Library were received from the Austrian 

 Academy, many volumes of the No vara Expedition ; the 

 Royal Society, Melbourne ; the Geographical Society and 

 Revue Politique, Paris ; Lord Lindsay (Editor of the Dunn 

 Observatory Observations), and London Nature ; the Royal 

 Edinburgh Society ; Essex Institute ; White Mountain Al- 

 pine Club (Ap])alachia), Boston ; Antiquarian Society, Wor- 

 cester; American Chemist ; A. N. Williamson, M. D., New 

 York ; Butfalo Society of Natural Sciences ; A. Journal 

 Medical Sciences; Medical News; Penn Monthly; Com- 

 mittee of National Centennial Celebration, Phihidelithia ; 

 U. S. Department of the Interior; and the Botannical Ga- 

 zette, Hanover, Indiana. 



The death of a member, Dr. Alexander Braun, at Berlin, 

 Marcli 29, 1877, aged 71, was announced by a circular family 

 letter. 



Mr. Britton exhibited specimens of lignite and peat, and 

 pressed fuel trom peat manufactured in the State of New 

 York, and read a paper explanatory of the process and value 

 of the fuel, with analyses made in his own laboratory. 



Several written communications handed to the Secretary 

 for presentation to the American Philosoi^hical Society, by 

 the Rev. J. L. Gross, w^ere read by title l>y the Secretary. 



Professor Frazer read a communication of facts which he 

 had observed in his survey of York and Adams Counties, 

 Petmsylvania, and discussed the views of Prof. II. D. Rogers 

 and others respecting the cause of the general north-west dip 

 of the New Red and of the orisiin of the mao-netic and 

 specular iron ore beds of the New Red and of the Azoic 

 rocks of the South Mountains, insisting specially upon one 

 point, viz.: that parallel straight lines about N. 20 E. may 

 be drawn through all the ore banks of any consequence, irre- 

 spective of their liabitat in the two formations ; a fact which 

 seems to make the ores common to both by some law^ not yet 



