Ree ee a ae FT 
as eta : 
ae 
1886.] Progress of N. A. Invertebrate Paleontology for 1885. 505 
opment, or that its growth was strongly marked at a very early 
date. How far it has increased in size over that of its non-human 
ancestor, we cannot judge from comparison with the brains of 
any existing apes, since these may be of a much lower grade of 
development. They are probably not fair standards of compari- 
son. And if the body stood almost unchanged for ages, and all 
the influences of nature centered themselves upon the brain, a 
considerable increase in size and some variation in structure were 
inevitable consequences, and it is not easy to perceive, under the 
circumstances, that there is anything extraordinary in the special 
growth of the human brain. 7 
In the making of man, then, we perceive the critical step that 
took the animal world over the dividing line between physical 
and mental evolution; and in human development we are con- 
cerned, not with the maturity of an old, but with the infancy of a 
new evolutionary process, which is full of far-reaching and extraor- 
dinary possibilities, of which the intellectual progress yet attained 
by man may be but the beginning. There may be*needed as 
many millions of years for the full development of the mind as 
have been consumed in the evolution of the body, and the organ 
of the mind may yet attain an importance in the scheme of the 
physical organism of which we have no conception. 
10: 
REVIEW OF THE PROGRESS OF NORTH AMERICAN 
INVERTEBRATE PALAZZONTOLOGY FOR 1885. 
BY J. B. MARCOU. hy 
p year which has just passed shows a marked increase in 
; the number of palæontologic articles. The tendency to pub- 
lish new species without any illustrations is also diminishing, and > 
those interested in the science can look with great satisfactionon — 
the augmented activity of North American invertebrate palaon- 
gy. 
T. H. Aldrich gives “Notes on the Tertiary of Alabama and 
Mississippi, with descriptions of new species,” and “ Notes on — 
ertiary fossils, rare, or little known,’ in the Jour. Cincinnati 
Soc. Nat. Hist., Vol. VIII, pp. 145 and 153. “ Observations 
the Tertiary of Alabama” appeared in the Amer. Four. Sci, 3d 
ser., Vol. xxx, p. 300. | as 
H. M. Ami has a “ List of fossils from Ottawa and vicinity, | 
