XX TRANSACTIONS OF THE PLYMOUTH INSTITUTION. 
The Curator of Geology reported that considerable additions of 
much value had been made to the collection during the past year. 
" 1. The complete collection of the Osseous Deposit from Catte- 
down, presented by Messrs. Burnard and Alger, has been placed in 
the cases of the Museum. The examples have all been arranged, and 
described by Mr. Worth in a paper read before the Society during 
the past session, which will be published in due course in the 
Society's Transactions. The large masses of stalagmitic bone 
breccia, which were both too large and too weighty for the table 
cases, have been placed in vertical cases on the floor. 
" 2. The Silurian collection (Wenlock series) has been enriched 
by several specimens of corals, encrinites, and brachiopods. One 
large slab, nearly two square feet, contains many examples, 
including fenestella, many species of coral, encrinites, trilobites, 
brachiopods, and atrypa, rhynchonella, orthis, and strophomena. 
These have been presented by Mr. F. Brent, who has also deposited 
in the Museum case, on loan, a beautiful cast of the impression 
of the feet of the cheirotherium, or, as it is now named, 
labyrinthodon. The interest attaching to this, apart from its 
intrinsic geological value, arises from the fact of its being part of 
the first slab upon which such impressions were found in England 
fifty years ago (1838) at the Storeton Hill Quarry in Cheshire, 
about three miles south of Birkenhead. It is from the whitish 
quartzose sandstone of the Bunter or Lower Trias. 
"3. Through Mr. G. C. Bignell a glass case, containing a rib, 
with vertebrae and sundry teeth of a shark, from the Post Tertiary 
phosphatic deposit of South Carolina, has been presented by 
Mr. James P. Cregoe, f.e.s. The whole are firmly secured to the 
case, which has been placed in the recess behind the stove. 
"4. A valuable addition to the collection of Tertiary fossils has 
been made by a representative series from the recently-discovered 
Pliocene deposit at St. Erth. This was presented by the late 
Mr. Kobert G. Bell, f.g.s., through Mr. Worth. 
"It is not a little remarkable that of the four men who have 
been mainly identified with the elucidation of the geological 
problems presented by the discovery of the St. Erth bed about 
five years ago, no less than three — Mr. Searles Valentine Wood, 
Dr. Gwyn Jeffreys, and Mr. Kobert G. Bell — have passed away. 
"This bed, situated on the side of the valley which runs from 
Hayle on the north to Marazion on the south, indicates the 
