682 
[November, 
Analyses of Books. 
An unfortunate fadt is that Aphides have their protestors as 
well as their enemies. Ants not only defend these vermin 
against attacks, but have even been known to re-introduce them 
upon trees which have been cleared at great labour and expense. 
Hence, as a preliminary to attacking the aphides, it is neces- 
sary to wage war against the ants with carbolic acid and corrosive 
sublimate. We do not find here any reference to ants — such as 
the leaf-cutters — and to the termites as enemies of man. 
The horrible taste and smell of the field bugs, both in this 
country and abroad, are duly noticed. The author describes 
very graphically his experience on accidentally swallowing a 
bug along with the berry upon which it was sitting. He does 
not exaggerate, for we once put into our mouth a fine blackberry 
on which a specimen of a beautiful Hungarian species was 
sitting. We did not swallow the dainty morsel ; still we did not 
get rid of the savour for the remainder of the day. One im- 
portant point overlooked is the suspicion, now almost amounting 
to a certainty, that fleas, bed-bugs, mosquitoes, &c., may transfer 
diseases from one person to another, and may inoculate man 
with the poison of swamp fever. 
The wasp has been here omitted. Yet in districts where they 
are abundant it is almost impossible to protect choice fruit from 
its ravages. 
‘•Our Insedt Enemies ” should be generally read in country 
districts, and its teachings should be carried into practice. 
Proceedings of the Bristol Naturalists' Society. New Series, 
Vol. IV. Part III (1884-5). Bristol : James Fawn and Son. 
This volume contains papers on the Mapping of the Millstone 
Grit at Long Ashton, by Prof. C. Lloyd Morgan, F.G.S., in 
which the author corredts an error committed by Mr. Sanders in 
the boundary of the Millstone Grit. Dr. S. F. Burden contributes 
a paper on the total eclipse of the moon, Odtober 4th, 1884, 
rendered noteworthy by the unusual fadt of the almost total 
extinction of the moon to the naked eye. He suggests the solar 
corona as the source of the light which generally illuminates the 
eclipsed moon. Prof. C. Lloyd Morgan, in a second paper, 
considers “ Sub-aerial denudation and the Avon Gorge.” In 
his conclusion he remarks that “ the general denudation which 
has removed all the inferior oolite, not to mention the newer 
rocks which almost certainly overlaid it, and nearly all the Lias 
from our distridt, demands almost more of our wonder and our 
faith in geological principles than the special denudation which 
has cut for us the Avon Gorge.” 
