Sa eal 
41 
10. On the Glacial Phenomena and Present Configura- 
tion of the State of Maine, by L. Agassiz. 
11. Ona Regulator for Maintaining Uniform Motion, and 
an Apparatus for Recording Time Observations in Type, by 
J. E. Hilgard. 
12. On the Progress of the Geological Survey of Cali- 
fornia, by J. D. Whitney. . 
13. On the Mineral Lands of the United States, and the 
Relations of the Government to their Management, by J. D. 
hitney. 
14. On the Origin ‘and Formation of Sedimentary Rocks, 
by J. S. Newberry. 
15. On the Origin and Distribution of Petroleum in the 
United States, by J. S. Newberry. 
16. The Theory of the Sling, by Benjamin Peirce. 
17. The Fucoids of the Coal Measures, by Leo Lesque- 
reux, : ; 
18. Letter from Mr. Agassiz. 
19. Observations of the Right Ascensions of Stars within 
one Degree of the North Pole, by B. A. Gould. 
20. On Observations of Tides at the Island of Tahiti, 
made by Captain John Rodgers, of the United States Navy, 
for the United States Coast Survey, by J. E. Hilgard. 
21. Discussion of Magnetic Observations made at East- — 
port, Maine, during the Years 1861-1864, by the United 
States Coast Survey, by J. E. Hilgard. 
22. On Rifled Guns, by W. H. C. Bartlett. 
23. A New Theory of the First Principles of the Dif- 
ferential Calculus, by Theodore Strong. 
24. On the Ages of the United States Volunteer Soldiery, 
as deduced from the Statistical Bureau of the itary 
Commission, by B. A. Gould. 
25. On a Photometer, by O. N. Rood. 
4* 
