117 



Professor Loomis infers from a comparison of these observations 

 with others made in the eastern part of the United States, that the 

 lines of equal dip intersect the parallels of latitude, their direction 

 being from about N. 82° W. to S. 82° E. 



Dr. Chapman, from the Committee appointed to apply to 

 Mrs. Madison, for certain meteorological observations made by 

 the late President Madison, reported that a number of docu- 

 ments had been received, and presented them to the Society. 

 The Secretaries were directed to return thanks to Mrs. Madi- 

 son for this donation. 



A necrological notice of the late Bishop White, prepared in 

 pursuance of the request of the Society, by Bishop De Lancey, 

 was read. 



Dr. Chapman announced the death of Matthew Carey, of 

 Philadelphia, a member of the Society, and Mr. Lea was re- 

 quested to prepare an obituary notice of the deceased. 



Dr. Bache announced the decease of Dr. Robert Perceval, of 

 Dublin, a member of the Society. 



The Librarian of the Society was authorized to furnish to 

 the family of the late Dr. Bowditch, to be placed in the library 

 of the deceased, any volumes of the Transactions which may 

 be deficient in the set belonging to Dr. Bowditch, and the 

 future volumes, so long as the library shall be kept open for 

 public use. 



Dr. Hays presented a table, compiled by him, of the pecu- 

 liarities in various cases of individuals not able properly to dis- 

 tinguish colours. Mr. Kane added the comparisons which he 

 had made, in the case of a friend, with the specimens named 

 by Dr. Dalton, of Manchester, in the possession of Professor 

 Bache. 



Professor Bache made a verbal communication of the mea- 

 sures taken by the British government, on the recommenda- 

 tion of the British Association, and under the advice of the 

 Ro} r al Society, for obtaining a series of magnetic observations 

 in different quarters of the globe, in conjunction with a naval 

 expedition in the southern hemisphere, under the command 

 of Capt. James Clark Ross, and read extracts from letters of 



