46 
22. On the Influence of the Hour of the Day on the Results 
of Barometric Measurements of Altitudes, (not read,) 
by Arnold Guyot. 
23. On Shooting Stars, by H. A. Newton. 
24. A Method of determining the Errors of a Vertical 
Divided Circle, by Simon Newcomb. (Presented by 
Benjamin Peirce.) 
25. Considerations relative to various Phenomena presented 
by certain Comets, by Stephen Alexander. 
26. Memoir of Lieut. E. B. Hunt, by F. A. P. Barnard. 
27. On a Chronograph for Measuring the Velocity of Pro- 
jectiles, by J. E. Hilgard. 
28. On the Homologies and Classification of the Cephalo- 
pods, by L. Agassiz. ; 
29. On the Geographical Distribution of North American 
Birds, by 8. F. Baird. 
80. Note on the Changes that have taken place in the Be 
of Charleston Harbor since the Sinking of Obstructions 
in the Main Channel, as developed by the United 
States Coast Survey, by J. E. Hilgard. 
31. On the Tables of the Moon, by Benjamin Peirce. 
32. On the Metamorphoses of some Malacoptery gians, by 
L. Agassiz. 
33. On Chemical Classification, by Wolcott Gibbs. 
34. On the Dimensions and Proportions of American Sol- 
diers, by B. A. Gould. 
35. On a Method of Exhibiting certain Statistics of Hos 
.  pitals, by J. L. Le Conte. rue 
36. On the Glacial Phenomena and Present Configurabon 
of the State of Maine, by L. Agassiz. 
. = 37. On a Regulator for Maintaining Uniform Motion, and = 
_ an Apparatus for Recording Time Observations in : 
‘Type, by J. E. Hilgard. 
