13 
not in the stable,” it would appear attack might be much 
lessened if for one thing the working horses were shel¬ 
tered, during their rest hour in summer, from the bright 
midday heat, and similarly (if at grass) had opportunity 
given them of sheltering in the shade, and comparative 
coolness of open sheds or groups of trees ; or again, had 
access to water, which appears, from the testimony of 
English, German, and American writers, an unfailing 
resource in attack of several kinds of Bot Flies. 
The point that the maggot goes through its changes 
either in the manure in which it was deposited or the 
ground beneath it, is a most important consideration 
with regard to prevention ; but I need not point out, 
with maggots of such a visible size, that to know where 
they are (if present at all) in the field, or yard, or stable, 
is to have the opportunity of collecting them, or of 
preventing their development by agricultural measures, 
which without any specification will occur to all of us. 
Relatively to destroying the eggs, as these are visible 
on the hair of all horses excepting those of their own 
whitish colour, the applications of brushing, and all 
other measures calculated to keep the coat in order, 
would seem all that is needed. I am offering the 
suggestions of means of prevention under submission 
to those who understand the management of the 
attacked animals better than myself, but from the 
entomological standpoint, from the habits, that is, of the 
insect, it certainly appears to me that with large num¬ 
bers of the horses which are necessarily passed under 
the hand daily in harnessing, a little care to free them 
from the eggs, and to shelter them or allow them to 
shelter themselves from egg-laying, would make a great 
difference, and that the same care would pay if bestowed 
on young or valuable animals in the fields. In days not 
very long ago even our best observers considered this 
maggot attack beneficial than otherwise; therefore it may 
be just remarked that to have dozens or scores affixed to 
the coats of the stomach, or piercing holes nearly as 
large as the top of a pencil deeply into it, can hardly be 
