REMEDIES AGAINST FLIKS. : 165 
may carry away on their bodies disease-germs of all kinds. 
Settling again upon a healthy being they may communicate 
such a disease by contact. In this manner diseases have 
been carried about by such flies. Again some of them can 
eat the eggs of various parasitic worms, and discharge them 
unharmed with their feeces. It has been demonstrated that 
several internal parasites of man have thus been distributed. 
Dr. Grassi has shown that the eggs of the tape-worm 
(Twnia solium) and of Tricocephalus dispar were carried by 
the common house-fly. | 
How to protect man and animals against flies in houses 
and stables is not an uncommon question. It is not difficult 
at all to prevent all such tormenters as house-flies, stable- 
flies, flesh- and blow-flies, mosquitoes and others from biting 
us in our homes, or our domesticated animals in their 
stables, nor is it very expensive. Persian and Dalmation 
insect-powder, or Buhach, is a most excellent substance for 
this purpose, and if not too old or too much adulterated 
will succeed. It can be applied in several ways; as a powder 
or as fumes. The former should be blown in the air; the 
latter should be burned upon an old saucer or plate. A very 
nice way is to form the finely powdered and slightly moistened 
pyrethrum into cones, which after being dried in an oven can be 
ignited at the apex, when they will slowly burn and give off 
the deadly fumes. Only a small amount is required, provid- 
ing the doors and windows are closed, the quantity depend- 
ing upon the quality of the powder. All flies in rooms or 
stables will soon show the effects of thisinsect-powder; they 
either die from it, or become too disabled to do mischief for 
quite a while. 
According to the ‘(Denver Field and Farm” of April 25, 
1896, a machine for catching flies from the backs of GHLtles 
and so affording the animals relief and comfort, has been in- 
vented by a farmer in Madison County, Kentucky. The fly- 
catcher is a kind of covered pen or passageway, through 
which the animal must walk to secure relief. A few feet 
from the entrance there is a cupola, or dome, in the roof of 
the passage-way, made of glass and arranged as a fly-trap. 
Beyond this the passage-way is in darkness. The animal 
