: 108 
3. Experiments with H. megastoma:— 
(a) Larvae placed in the skin of the horse— 
Proboscides of Musca domestica heavily infested with larvae 
were placed in three incisions in the skin of the mare and remov 
lerosc 
of the tissues with .annotbiley, hyperplasia of the fixed cells, the 
formation of mult + sheen cells, the presence of necrotic 
re 
e other Seat aig pe arched: for about three weeks, when 
i d. 
e experiments were repeated on the p Prob eee 
senis placed in three iih in the skin pesa hla from ba 
s 
* ena s 
scopic examination showed that the larvae had made marii 
nto the subcutaneous tissues, where they were surroun nd 
ee es 
The other two areas were left for further observation. tum 
forty eight Harris after inoculation the swelling had alm ost a 
in de vut our days’ time there was little or 
okoia “of the tiss 
(b) Larvae added to the conjunctival sac— j 
ae were added to the conjunctival sac rien produced 
a 
a further three days the c conjunctiva was injected and nai 
swollen. Small Laedewiah “tubercles” were to be seen on the 
membrana ese persisted for over a week, but in a fortni eros 
bod 
s. De en experiment was repeated on ihe pony with exactly the 
e had « ad entirely disappeared. Epiphora continued, however, 
(c) Latva placed on a scarified area of skin— us 
.  Larvae were placed on three scarified areas of the skin of 
mare. Larvae were added to one of the venie areas on 
Ne days. In case was any reaction produc rade 
: raat agi aw ted th n pe Scari 
þe ! Mi AL on on "the pony, 
( d) Tõm placed on a otesid area of skin— me 
RUE Larvae,» P gs paret two moistened areas of the s&Im 
: (the pos No reaction was p roduced. of the 
'erim nk was repeated on two areas of the skin 
