ERRATA. 
Page 74, note, line 1, for was read is ;—p. 224, |. 4 from top, omit superficial ;— 
p. 255, note, 1. 9 from bottom, for experiment read experiments ;—p. 259, note (0), 
for 33 read 34;—p. 274, note, bottom line, for call read calls. 
CORRECTIONS AND ADDITIONS. 
Prof. Henry’s piece on the Aurora, p. 143, is taken from the report of the Re- 
gents of the University of the State of New York, to the Legislature of the same 
in 1832, which will soon be published.—Page 154, line 3 from the bottom, for eve- 
ning read evenings. 
** 
