E R R A T A . 
Page 18, line 3d, read i&c-Presidents instead of “Vice-Presidents. 77 
“ 86, first line under cut, read Allen’s patent. 
£ 393, line 16, for “tammarack” put tamarack. 
' 397, line 15, for “pith” put with. 
“ 418, line 29, for “Meliotus” put Melilotus. 
t 
423, line 35, for‘‘Cyllindrotliecmm,’’ put Cylindrotheceum 
“ 423, line 40, for “trignetrum, 7 ’ put triquetrum. 
K 423, line 45, for “delplanatmn,” put deplanatum. 
“ 424, line 13, for “Ttichocolea. 77 put Trichocolea. 
“ 522, first line, for ‘‘winters of 1857-8 ,’ 7 put ivinter of 1856 7 
