The Photographic Survey of a State. —Fischer. 289 
— that would require a lifetime, but the most salient features 
are, at all times, the only ones noticed, so that the power to 
expunge becomes quite as useful as the power to insert. After 
the different groups are in turn studied the pupil finds himself 
at the point from which he started — the Glacial period. The 
old plan of beginning with the Archean because it was the first 
in point of time has no good reason to sustain it, especially 
if the pupils are immature. The error comes in supposing 
that the order of instruction must coincide with the develop- 
ment in order of time — a supposition to w'hich the most char- 
itable rejoinder is that it is an egregious blunder. The young 
mind must begin with that which can be seen, be handled and 
experienced. The crude materials must be furnished the 
mind else there can be no proper use of the higher functions of 
imagination, reason and judgment. Hence the practical, also 
the psychological, order is to begin with the home geology, 
then going to the broadest view possible, the nebulous mass 
as a whole, then in turn, the earth, North America, and the 
particular region in which the study is pursued, keeping in 
mind the bearing of each new phase upon evolution and the 
progress of life from Eozoon canadense (if it be a form of life) 
to man as the crowning glory of all. 
THE PHOTOGRAPHIC SURVEY OF A STATE. 
By MoRiTZ Fischer. 
During the progress of the geological survey of a state, a 
large amount of material is accumulated which usually serves 
as base for a state museum. Most of our state museums have 
originated in this manner ; the very nature of their origin is 
still upon them ; they illustrate the geology and economic re- 
sources of their respective states. 
Such a museum is of great value ; its collections form a 
library to which resort both investor and man of science for 
accurate and reliable information. 
Now, while the material benefits resulting to a State from its 
museum may be demonstrated in dollars and cents, said 
museum possesses educational possibilities which have but 
rarely been utilized, and when the attempt has been made it 
has resulted in at least partial failure chiefly due to want of a 
natural base and background upon which to organize and 
against which to place the collections. 
