51 
compared to men, comparatively little to the conditions favouring 
the attack of Glossina palpalis, the disproportion becomes still more 
striking. 
Another point that has attracted my attention in connection with 
these cases is the frequency (four in the eight cases in which the 
point was inquired into) with which the symptoms were immediately 
ante-dated by what was described as a bite on the leg. The biting 
animal may have been a Glossina, but in the case of females—and two 
of the bitten ones were females—one would suppose that the 
petticoat would afford a protection even more effective than the 
trouser does in men. 
Too much weight must not be attached to what may have been 
mere coincidence; but these facts are curious, and suggest further 
inquiry as to the possibility of some blood sucker, perhaps some 
species of house vermin, being an occasional vector of Trypanosoma 
gambiense. 
