72 Dr Yule on the Effects produced by the presence of the 
From Journal kept at Edinburgh. 
April. 
Therm. 
Barom. 
Remarks. 
4 hours 
after 
Sunrise 
3 hours 
before 
Sunset. 
4 hours 
after 
Sunrise. 
3 hours 
before 
Sunset. 
6 
-f 33 
-j- 40 
29.168 
29.455 
Fair sunshine, cold. 
7 
32 
43 
.632 
.655 
Fair, dull, cold. 
8 
28 
43 
.702 
.790 
Clear warm day. 
9 
34 
39 
.752 
.750 
Dull, very cold east wind. 
10 
31 
42 
.930 
.968 
Cold morning, afterwards sunshine. 
11 
32.5 
43 
.994 
.999 
Fair, cold, dull. 
Art. VL- — Account of the deleterious effects produced by the pre- 
sence (ffthe Larva of an Insect in the Human Stomach , with 
Observations.— By J. Yule, M. D., F.R. S. E., Fellow of the 
Royal College of Physicians, M. W. S., &c. 
A strong, athletic, country man, who had been employed in 
the hay harvest, towards the end of June, was, in the July fol- 
lowing first seized with an uneasiness in the stomach, which 
gradually increased to pain, occasionally severe, and total loss of 
appetite, emaciation, and great debility. For some time, the 
remedies usually administered in cases of indigestion, were used, 
without any permanent relief. But, after several weeks, during 
a fit of vomiting, a large hairy caterpillar was ejected with the 
contents of the stomach. It was impossible, from the circum- 
stances, to ascertain, with precision, the nature of the insect to 
which the larva belonged, but there could be no doubt of the 
cause of the distress of the patient, who, from this time, daily 
recovered his former health. Cases pf this nature are occa- 
sionally noted ; and it is rather surprising that they do not oc- 
cur more frequently, when we consider how much we are ex- 
posed, especially in the spring and towards autumn, to such ac- 
cidents, by swallowing the ova of certain insects along with our 
aliment. Dr Lister, in the tenth volume of the Philosophical 
Transactions of London, relates an instance of a boy who vo- 
mited several larvae of the lepidopterous race ; and there are va- 
rious other instances of this nature on record. In the present 
case, however, the larva seemed to belong to one of the dipterous 
tribes (Tipulidese) which haunt the borders of our ditches. The 
