446 



Exchanges. 



Pulse and Rhythm, by Mary Hallock Greenwalt. 



Rochester Academy of Natural Science — Proceedings, 4 mono- 

 graphs, Williamette Meteorite, March, 1904. 



Smithsonian Institute — 32 Monographs; 20 Monographs, from 

 Report, 1903; Annual Report, 1901. 



Staten Island Association — Vol. 7. 



Stirling Natural History Society — Transactions, 1901-2, 1902-3, 



and 1903-4. 

 Sverige Antikvarish Tidshift, Vol. 17, Part 3. 



