150 DEER AND DOG TICKS. 
filled with black blood. Disgusting things to look at, grow rapidly in 
size, and can be seen projecting well through the coat, and hanging to 
the skin, they exist comparatively in small numbers compared with 
the ‘ bug’ form, which, if allowed free fling, grow and thrive and exist 
in hundreds. 
‘‘ Found principally in clusters attached to the skin, between the 
toes of all four feet, in the ears, back of the neck and along the back, 
and, in fact, in almost all parts of the body. When detached by 
picking they leave bleeding apertures in the skin. 
‘‘ During the season, if dogs are permitted to live in the house, you 
will find these insects crawling about the floors and up the walls in 
great numbers. I have had the ‘bug’ form fix on me, and cause 
quite a sharp bite; but as a rule they only crawl on you, apparently 
endeavouring to get away. 
«« The best remedy in the dog against these Ticks is cleanliness and 
daily picking, and to change its location day by day. You may pick a 
dog one day until he appears perfectly free of the insects, and in 
another two or three days you will find him just as bad as before. 
They set up great irritation in the skin, and in some cases a falling off 
in condition. 
«The pupa [like] form wants a lot of killing whilst hanging on to 
the skin, anda medicinal agent sufficiently strong to do this would 
injure the skin. The ‘bug’ form, which crowds between the toes, can 
be made to readily leave their hold and die by putting the dog's ioot 
in a cup of kerosene. The pupa [like] form exists upon the skin in 
all sizes, from the tiniest pinky-coloured insect to the full-grown speci- 
mens which you see.’’—(S. H.) 
The plentiful supply of specimens of all sizes sent me showed the 
aptness of Dr. Spooner Hart’s descriptions (conveyed in ordinary ex- 
pression, not technical language) of the appearance of the infestation. 
A large number were of a bluntly oval shape, bearing (except in 
the presence of legs, as observed by Dr. Hart in a portion of his com- 
munication to myself) a strong resemblance to the pupa-cases of 
various insects. The ‘bug’? form was flat, of a shape technically 
described as ovo-triangular, that is, somewhat pointed before and 
rounded behind, the length rather more than one-sixteenth of an inch, 
the breadth rather less. These were presumably the males; the 
largest of the ‘‘pupa-like’’ forms were fully-developed females; and as 
Ticks are stated to have in their early conditions the characters of 
species modified by the attributes of their age, it appeared that the 
great number of bean-like Ticks, which ranged in length from little 
creatures about the sixteenth of an inch to rather over three-eighths 
of an inch, were young, up to developed, females. 
The fully-developed females were much distended, and the mass 
