95 



of Texan Boundary, and of the North-Eastern Boundary. De- 

 cember, 1842. 8vo. — From Major J. D. Graham. 



Map of the Boundary Lines between the United States and the adja- 

 cent British Provinces, from the mouth of the River St. Croix to 

 the intersection of the Parallel of 45 degrees of North Latitude, with 

 the River St. Lawrence near St. Regis. Showing the Lines as 

 respectively claimed by the United States and Great Britain under 

 the Treaty of 1783, as awarded by the King of the Netherlands, 

 and as settled in 1842 by the Treaty at Washington. Compiled 

 under the direction of Major J. D. Graham, of the Topographical 

 Engineers, Commissioner. Seven copies in sheets, one copy 

 mounted. — From the same. 



Profile with the Spirit Level of the due North Line from the Monu- 

 ment at the Source of the River St. Croix to the River St. John. 

 Surveyed in 1840 and 1841, under the direction of Major J. D. 

 Graham, etc. etc. Five copies in sheets, 1 copy mounted.— i^rom 

 the same. 



A Map of the Extremity of Cape Cod, including the Townships of 

 Provincetown and Truro : with a Chart of their Sea Coast and of 

 Cape Cod Harbour, State of Massachusetts. Executed under the 

 direction of Major J. D. Graham, U. S. Topographical Engineers, 

 during portions of the years 1833, 1834, and 1835. Engraved 

 by order of the House of Representatives of the United States, 

 under the direction of the Bureau of Topographical Engineers, to 

 accompany Document 121, 26th Congress, 2d Session. Seven 

 copies, fine paper, 4 sheets each. — From the same. 



ADDITIONS TO THE IIBRAEY BY PURCHASE. 



Comptes Rendus hebdomadaires des Seances de I'Academie des 

 Sciences; par MM. les Secretaires Perpetuels. Tome XVIIL 

 Nos. 5 to 18 inclusive, 1844. 4to. 



Astronomische Nachrichten. Professor Schumacher, Editor. Nos. 

 503 and 504. May 9 and 23, 1844. 4to. 



Dr. Bache announced the decease of Dr. John C. Otto, a 

 member of the Society, who died in Philadelphia on the 2Gth 

 June, 1844, aged 70 years. 



In answer to a question put by Dr. Patterson, Mr. Lukens 

 stated, that the amalgamation of mercury with iron, which was 

 referred to by him at the last meeting, was observed by Pro- 

 fessor Ellett, of South Carolina. 



