ad 
40 
by J. J. Lepaute d’Agelet at Paris, during the Years 1783 - 
1785, with a Catalogue of the corresponding Mean Places 
referred to the Equinox of 1800, by B. A. Gould. 
6. On the Metamorphoses of Fishes, by Louis Agassiz. 
7. On the Saturnian System, by Benjamin Peirce. 
8. Notes on the Parallelogram of Forces and on Virtual 
Velocities, by Theodore Strong. 
9. On the Geographical Distribution of Fishes, as bearing 
upon their Affinities and Systematic Classification, by Louis 
Agassiz. 
10. On thé Discussion of Magnetic Observations made at 
Girard College Observatory in the Years 1840 - 1845, Parts 
I., VUI., and IX.; Vertical Force; Investigation of the 
Eleven-year Period of the Solar Diurnal Variation and 
Annual Inequality, and of the Influence of the Moon, 
by A. D. Bache. ; 
11. Description of an Anemograph designed for the Uni- 
versity of Mississippi, by F. A. P. Barnard. 
12. On Materials of Combustion for Lamps in Light 
houses, by Joseph Henry. : 
13. On Photographs of the Solar Spectrum, by Lew 
M. Rutherfurd. . 
14. On Tangencies of Circles and Spheres, by J. G 
Barnard. 
15. On Observations of the Planet Venus near the times 
of her Inferior Conjunction, September 28, 1863, and subse- 
quently, by Stephen Alexander. 
16. Brief Note on the Forms of Icebergs, by Stephe? 
Alexander. 
17. Memoir of the late Henry Fitz, by Lewis M. 
18. On the Distribution of certain important Diseases in 
the United States, by Augustus A, Gould. 
