( 2 ) 
Maggots. 
Club-shaped. Worm-like. 
Magnified. 
The open Warble was first found towards the end of January, 
and by the end of February open Warbles were noticeable in many 
places, and the maggot was now white (not being feeding in bloody 
matter), worm-like, and with strong mouth-forks; in its nest stage 
it was club-shaped, and had a power of inflating itself by drawing 
in fluid until it was almost as hard 
and transparent as ice, and, lying 
small end uppermost, thus kept 
pressing the opening through the 
hide larger. In its next stage it 
gained its well-known shape, with a 
thicker and more prickly skin, the 
Warble cell at the same time gaining 
its membranous coating. 
The maggot can move up and 
down, but commonly has its brownish- 
tipped tail at the opening, and it draws 
in air through breatliing-pores in 
these brown-black tips or spiracles. 
The mouth-end is down below feed¬ 
ing in the ulcerated matter caused 
by the irritation of the perpetual 
suction of the mouth parts. The 
maggot cannot protect itself from 
the effect of applications, therefore 
anything put on the opening where 
the breathing tips show will choke 
the breathing apparatus, or run 
down into the hole and poison the 
maggot. The earlier this is done in 
the season the better it will be for 
the animal, and the less difficulty 
there will be in the Warble holes 
healing. 
Whilst the maggots are in the 
Warbles, though a skin-like mem¬ 
brane forms round the surface of 
the perforations (see figure, page 3), 
they cannot heal up because the 
maggot lies within, and when the 
Warble grub has fallen out, though 
the hole contracts, the surfaces 
being already covered with a film of 
tissue are slow to unite; and, as 
may be seen in warbled hides, 
union is often prevented by this 
skin-like film shelling off, and laying 
dried matter in the perforation. On the under side of the 
though the surface may not be broken, yet the subcutaneous 
Mouth-forks of young maggot, 
much magnified. 
Breathing-tubes of maggot, 
magnified. 
with 
hide, 
