HISTORY OF THE SOCIETY. 



533 



by sketches. He likewise communicated a short 

 notice regarding the Spines to be observed on the 

 fifth bone of the wings of the Water-rail, Coot, 

 Water-hen, and some other water birds ; the notice 

 being accompanied by an exhibition of specimens. 



Dr Yule laid before the Society, a notice regard- ^% 



ing a collection of rare Plants, in a living state, re- DrYuieon 



ceived from Dr Wallich of Calcutta ; and on the of?iMts° n 



means of Transporting Plants and Seeds safely from anTprofe?-' 



distant tropical countries. Professor Jameson read sor Jameson 



1 on Mud Vol- 



a paper on Rocks formed by mud-volcanoes, hot canoes, &c. 

 springs, &c. 



Dr Dewar read a paper on the Mode of Nutri- 

 tion of the Hair, Feathers, and Nails of Animals. 

 Professor Jameson read a letter from Dr Boue, con- 

 taining an account of the Resemblance of the Rocks 

 of Auvergne and the Vivarais, to some of those in 

 this country. 



Feb. 26. 

 Dr Dewar on 

 the Mode of 

 Nutrition of 

 Hair, Fea- 

 thers, and 

 Nails : and 

 Dr Boue on 

 the Rocks of 

 Auvergne. 



Mr Stewart read a paper describing a collection 

 of Cryptogamous Plants chiefly received from North 

 America. Professor Jameson communicated his 

 reason for differing from the Volcanists in their 

 views in regard to the formation of Trap rocks. 



March 11, 

 Professor 

 Jameson on 

 Formation of 

 Trap-rocks. 



The Secretary read the first part of a paper by March 25. 



Mr Steven- 

 son on the 

 Bottom of 

 the North 



Mr Stevenson, on the bottom of the German Ocean 

 or North Sea, illustrated by beautiful plans and sec- 



