294 



The London, Edinburgh, and Dublin Philosophical Magazine, and 

 Journal of Science. Third Series. No. 193. September, 1846. 

 No. 195. November, 1S46. 8vo. 



Astronomische Nachrichten. Nos. 571 to 574, inclusive. Nos. 577, 

 580, 581. 4to. 



DONATION TO THE CABINET. 



A case containing two Medals, one of Silver and the other of Bronze, 

 struck in Commemoration of the First President of the Royal 

 Academy of Sciences of Berlin, Godofr. Wilh. L. B. de Leibniz. 

 From the Royal Academy of Sciences of Berlin. 



Professor Frazer informed the Society of the death of Isaiah 

 Lukens, a member of the Society, who died on the 12th of 

 November, in his 69th year. 



On motion, Mr. Trego was requested to prepare an obituary 

 notice of the deceased. 



Mr. Ord informed the Society of the death of Don Martin 

 Fernando de Navarreto, President of the Royal Academy of 

 History of Madrid, a member of this Society, who died at 

 Madrid, October 8th, 1846. 



Professor Frazer brought before the Society the subject of 

 the manufacture of an explosive substance made from cotton. 

 It is made by immersing cotton in strong nitric and sulphuric 

 acids, and also with strong nitric acid alone. The process was 

 detailed, and a specimen exhibited. It possesses an hygros- 

 copic property; and when containing water is less explosive, 

 though its strength is restored on being dried. 



Pending nomination. No. 192, and new nominations, 193, 

 194, were read. 



Dr. Dunglison, as Secretary to the Board of Officers, read 

 the proceedings of the Board at their last meeting; and on mo- 

 tion of Dr. Patterson, the action of the Board in relation to a 

 paper offered for the Magellanic Premium, entitled "A Trea- 

 tise on the Parallatic Eye-piece," was approved. The opinion 

 of the Board was to this effect — That the treatise is very 

 learned and elaborate, and founded on a principle that is new 

 in its application, and may lead to important results; but that 

 the instrument itself has never been constructed, and conse- 

 quently its supposed advantages have never been tested; while 



