HILGARD—NATURAL SERIES. 131 
Definitions pene. effectually to render the essential 
characters and unimpeachable demarcations of eecwes 
nee 
quences therefrom dnaitahle.... 
_The specific or distinctive fundamental conditions of the 
, but require to be weneretentitie circumscribed and ana- 
aly gam and recorded; and this is the province 
ORGANOGRAPHY. 
_ Descriptive efforts, or the record of observations made, 
have, it is to be regretted, in organography, as yet been al- 
most exclusively confined to the collection and assortment of 
material. Observations on the especial and gen- 
eral economy of py eset life, the knowledge par excellence, Vitu 
of the connexion of 0: Lape eqs the due repository of 
are are mostly lost for vant of an 
