Mr D. Milne on Larthquake Shocks felt in Great Britain. 127 
of the front door, so far as to admit the little finger into the 
fissures. I conceive that these two injuries prove that the 
shock came from the north-west, causing the front wall to se- 
parate from the partition. In the manse, a person leaning 
against the east (gu@re, S.E.), side of a wall running south and 
north (gue@re, S.W. and N.E.), felt herself pushed forward, 
The cracks in the ceilings of the manse are chiefly from west 
to east. A dyke of stone and lime running east and west on 
the north side of the river Earn at Woodend, fell to the south 
into the river. Several loose stones fell froma dyke near the 
manse, This dyke runs east and west, and the stones fell to 
the north. One of my servants was passing at the moment. 
The loose caps of several chimney-cans were moved and turned 
to the west—proving, as I think, that the shock came from 
the west. I was of opinion, that formerly all the shocks pro- 
ceeded from the opening to Glenlednock, just above the vil- 
lage of Comrie ; and this was the settled opinion of a gentle- 
man who lived at Comrie-house for nine years, and had spent 
many years in the West Indies ; but if so, they would strike 
the north side of the manse, and not its west gable, as they 
appeared to do. Iam now inclined to conclude, that they 
come from some part of the hill between Dunira and Lord 
Melville’s monument, and that there is a probability that the 
central radiating point has removed a little from east to 
west. 
(To be continued.) 
Anatomical and Physiological Studies of a Species of Musca, 
with the view of Illustrating the History of Metamorphoses, 
and the Pretended Circulation of Insects. By M. Lron 
Dorovur. 
Berore I am in a condition to present to the Academy the results of 
my numerous dissections of insects of the entire order Diptera, I am de- 
sirous to submit my researches on the organization, exterior as well as in- 
terior, of the three forms of a well known species of Musea, the Musca 
carnassiere of Olivier, or Sarcophaga hemorrhoidalis. I have likewise un- 
dertaken, considering the subject in a less restricted light, to examine and 
decide, by facts and reasoning, a disputed question of the highest inte- 
