JOURNAL OF THE PLYMOUTH INSTITUTION. 
F orest, with a number of miscellaneous examples. IX. Polished 
specimens from Russia, France, Italy, the Pyrenees ; a collection 
of Alpine Rocks ; and some miscellaneous. X. Collections of 
Grecian Rocks, Phosphatic Rocks from Cerra Culebra, and of 
Fossil Woods, Agates, Jaspers, and Calcedonies. XL Collections 
of Rocks, largely Volcanic, from Ascension, Antigua, Bermuda, 
Brazil, Canada, Curacoa, Cuba, Cape Horn, Cape of Good Hope, 
Darien, Deception Island, Fernando da Xorhonha, King William's 
Island, United States, Maranham and Para, St. Helena, Staten 
Island, Trinidad. Case I. is thus devoted specially to typical 
examples ; Cases II. to VII. to rocks of Devon and Cornwall ; 
Case VIII. to British rocks ; Cases IX. and X. generally to 
European ; Case XL to American, African, and Oceanic." 
The Curator of Anthropology records 
"Several valuable presentations to his department of the Museum, 
from the family of the late Mr. J. B. Davidson, Messrs. Burnard, 
Lack, and Alger, and other sources. To the latter gentlemen the 
Society is indebted for the valuable presentation of a seventeenth- 
century cannon, dredged up in Catte water in association with the 
remains of an ancient ship. There is no reason to doubt that 
this gun is a relic of the siege. It is mounted on a carriage, 
made, under the direction of Mr. Robert Burnard, of the timbers 
of the vessel ; and accompanying it are the remains of the charge, 
still in the piece when it was dredged, and drawn by Mr. 
Burnard. 
The Curator of Mineralogy reports : 
" During the past year a few additions of minerals to the collec- 
tion have been made, but nothing of importance. We have at 
present a very fine nucleus for a good collection. Most of the 
principal minerals are fairly represented, but the Curator will be 
glad to have further contributions, so as to be able to fill up 
vacancies, and replace present representatives by better and more 
perfect specimens." 
The Curator of Fine Arts reports : 
"The pictures in the Art Gallery remain in the same condition 
as when last reported. The removal of the portraits bo the Art 
Gallery, where less gas is used, has arrested decay, bill they all 
