844 The American Naturalist. [October, 
Fig. 5. Three normal segments, dorsal view, less magnified than 
fig. 3. ; 
Fig. 6. Diagrammatic cross-section, showing relative positions of the 
parts of the exo-skeleton. 
Fig. 7. Last five segments, dorsal view. 
Fig. 8. Same, ventral view. ; 
Fig. 9. Antenna, much magnified, ventral view. 
Fig. 10. Second leg of male. 
Fig. 11. Eleventh leg of male. 
Fig. 12. Last leg of male. 
Fig. 13. Male copulatory legs, dorsal view. 
Fig. 14. Same, ventral view. 
Fig. 15. Segments seven and eight of young male—0O. F. Coox. 
PSYCHOLOGY. 
Congress of Psychologists.—The third Congress of Psycholog- 
ists was held at Munich, August 4th to 9th, Prof. Stumpf, of Berlin, 
presiding. It was the largest and in many respects the most successful 
of the three. Of course the German attendance was fuller than at the 
last one, held in London in 1892, and German delegates are always 
most welcome. When we take into account the fact that Germany is 
to-day the country where psychology is most vigorously and success- 
fully pursued, it follows that this Congress was, up to date, the greatest 
gathering of eminent psychologists ever seen. As to France, the 
attendance was disappointing in numbers, although the delegation was 
very representative; and the same is true of the British contingent. 
The other countries, except America, were adequately represented ; the 
small attendance from our side of the water being a matter of the more 
surprise in view of the tendency of our professors to take their vaca- 
tions abroad—indeed, the attendance at the last Congress in London 
was considerably larger. 
In its general character, the tendency to allow the popular attendance 
upon the meetings to swamp the scientific proceedings was more marked 
in Munich, and if is not too much to say that this constituted a very 
great defect in the arrangements. The membership was over four hun- 
dred. There was a constant flow from hall to hall, and the corridors 
1 Edited by H. C. Warren, Princeton University, Princeton, N. J. 
