30 [Senate 



This beautiful specimen is five and three-fourths inches in length, 

 and four and one- half inches in width. It originally belonged to 

 the late Jessi! Buel, who deposited it in the Cabinet of the Albany- 

 Institute. It was withdrawn from the Institute by the request of his 

 son Jesse Buel junior, and given to the New- York State Collection. 



T. A. Conrad, the Palseontologist to the New- York Survey, in 

 his annual report for the year 1838, page 118, describes this trilo- 

 bite as the Platynotus holtoni ; and remarks that " there is a 

 splendid specimen of this species in the collection of the Albany 

 Institute, deposited by Judge Buel." 



In volume 2 of the Paleeontology, p. 311, Prof. Hall describes 

 the specimen as Lichas holtoni ; and on page 313, remarks : " The 

 most perfect specimen I have seen is in the collection of the Albany 

 Institute. The matrix is also preserved with it, showing the cavities 

 of the eyes, from which the form has been taken in the figure of a 

 head (PL 70, fig. 1 a)." 



[ A plate of Lichas holtoni accompanies this report. A slight inaccuraey oc- 

 curred in the engraving' of this fossil, by which the third articulation from the 

 base on the lefthand side is represented as double; while it should have been 

 single, as in the corresponding articulation on the righthand side.] 



PROM T. ROMEYN BECK, OF ALBANY. 

 A geological specimen presenting various layers of Rock ; from the head of 

 Lake George. 



FROM THE DIAMOND SLATE COMPANY OF MIDDLE GRANVILLE, 

 WASHINGTON COUNTY, N.Y. 



Several large specimens of Roofing' Slate. 



FROM DR. CHARLES MARTIN, U. S. NAVY. 

 A Rock specimen from the Acropolis at Athens. 



FROM CHARLES VAN BENTHUYSEN AND JOHN E. GAVIT, OP 



ALBANY. 



A mahogany case containing specimens of the Granite used in the construc- 

 tion of the U. S. Dry Dock at Brooklyn. The following is a catalogue of 

 the specimens, and their localities : 



No. 1. Tarrytown quarry, New- York. 



2. Breakneck quarry, New- York. 



3. Staten Island quarry, New- York. 



4. Quincy quarry, Massachusetts. 



5. Sullivan quarry, Maine. 



6. Blue Hill quarry, Maine. 



7. Frankfort quarry, Maine. 



8. Millstone Point quarry, Connecticut. 



