258 GEO. H. BISHOP 
7. The bulb and elastic end of the ejaculatory duct do not 
act as a spermatophore, although after copulation, and while 
still attached to the queen, they may serve to hold what mucus 
may not have been fully expressed into the oviducts. 
8. The drone’s organs may be inspected in an undistorted 
state only by the most careful manipulation, as they are easily 
stimulated to contraction and explusion of their contents. This 
contraction may be watched in a freshly opened drone. It is 
inhibited by injection of picric-acid solution into the thorax 
and thence into the abdomen. It is stimulated by injection of 
acids or of fixatives containing acids. The use of acidulated 
fixatives may be responsible for erroneous views that have been 
put forward as to the normal quiescent condition of these organs. 
9. A response apparently duplicating the results of the normal 
act of copulation may be produced with considerable certainty 
by various means, as enumerated. 
