132 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



3. Princeton University Museum, by Professor Libbey ; 

 sixteen species of Tertiary fossil plants from Colorado, 

 new to the collection, for fifteen specimens of Palaeozoic 

 fossils. 



4. The Imperial Academy of Sciences, St. Petersburg, a 

 very interesting example of a portion of the skin of the 

 mammoth (Elephas primigenius), from Irkutsk, Siberia, for 

 five duplicate molar teeth of Proboscidea. 



5. With the Directors of the Berlin Museum, a coloured 

 plate of the Solenhofen Archoeopteryx, and various publica- 

 tions for the Geological Library, in exchange for a plaster- 

 cast of the great London Clay turtle's head (Eosphargis 

 gigas.) 



6. With the Directors of the Geological Survey Museum and 

 School of Mines, Berlin; seven casts comprising examples of 

 Rhinoceros megarhinus, and R. etruscus ; of Hip2')opotamus 

 -moy or, and Trogontherium Cuvieri, from Gerrhany; for seven 

 casts of teeth of Rhinoceros rnegarhinus (figured by Boyd- 

 Dawkins in Nat. Hist. Rev. 1865), from the Pleistocene . of 

 Grays, Essex. 



IX. — Duplicate Fossils presented by the Trustees. 



One thousand duplicate fossils, chiefly Invertebrata, from 

 various localities and formations, given to the Schools of the 

 London School Board. 



One hundred and fifty-one duplicate fossils, viz. : sixty-one 

 fishes, forty reptiles, and fifty mammals from various 

 localities and formations, presented to the University College 

 of Dundee. 



A series of two hundred and ninety-five duplicate specimens 

 of Brachiopoda from the Davidson collection, transferred to 

 the Free Public Museum, Brighton. 



X. — Lectures and Demonstrations. 

 Swiney Lectures on Geology : 



A course of twelve lectures on " The Great Periods of 

 Geological History," by Professor Henry Alleyne Nicholson, 

 M.D., D.sc, F.G.S., &c., Regius Professor in the University of 

 Aberdeen, was delivered in the Library of the Geological 

 Department, commencing on the 3rd of October, and, con- 

 cluding on the 27th of that month ; they were attended by 

 2,719 persons, being an average of nearly 227 persons to each 

 lecture. 



Dr. Woodward gave demonstrations in the Geological 

 Galleries : — 



On March 12th, to the " Natural History Society, Toynbee 

 Hall" ; twenty-two members were present. 



On 



