1881. ] . Editors Table. 379 
and cutting across the cesophagus. Drawn in order to show = relation of the 
brain to the eyes and the exterior of the head; magnified 30 diameters. th 
brain, the right mushroom body is seen, wily the optic and sera lobes are 
not so well marked. The central body (cem/r. 4.) is cut through near the mid- 
; below are the trabeculee oe ); next to the commissural lobes, two trachez 
Ur. ) or air-tubes passing near the brain. The commissure to the subcesopha- 
geal ganglion is drawn on sd right side, passing down the cesophagus. In the 
eye, the cornea, the respective portions composed of rods and cones, the black 
retina, the stratum of optic nervules, and the optic ganglion and optic nerve 
passing off from the optic lobe, are all well marked 
Fic, 2.—-Section through the brain and eyes of the same second pupa of C. spretus, 
a through the anterior part of the calices, but not through We central 
The section is oblique and does not well represent the right si 
Fic, 3. Pkg: of the section represented by Fig. 2; magnified 225 Rascals It is 
composed of granulated nerve substance pint a few fibers, the continuation of 
ose of the stalk, and with a few ganglion cells. 
Fic. 4—Section through the back of brain of the adult Locusta carolina, passing 
behind the mushroom body, showing the cesophageal commissures, the antennal 
lobes, and the bundle of nerve-fibers crossing to the right hemisphere. The 
the right mushroom body. The distribution of the large (/.g.c.) and small 
ganglion cells (sm. g. c.) is well seen in this section. It will be seen that the 
brain of Locusta carolina does not differ in any respect from that of Caloptenus 
Spretus, so far as the sections show. 
:0: 
EDITORS’ TABLE. 
EDITORS: A. S. PACKARD, JR., AND E. D. COPE. 
—— It is rumored that at the next meeting of the American 
Association for the Advancement of Science, to be held in Cin- 
cinnati in August of this year, a proposition will be brought for- 
ward to extend an invitation to the British Association to depart 
from their usual custom so far as to come over to this country in 
1883, and hold their annual meeting for that year in conjunc- 
tion with the American Association, at some place hereafter to be 
xed upon. A number of the most prominent scientific men in 
the States and Dominion are known to be in favor of the plan, 
and doubtless the members of our Association will be glad to send - 
such an invitation as a mark of our cordial feelings towards the 
students of science in the mother country. It will give us great 
pleasure if it should prove practicable for the English body to 
accept. We hope that the proposition may be happily successful. 
The advantages of such a gathering of scientific men from two 
countries having a common language, are as evident as they are 
great. The meetings of the American Association have proved 
