a 
0). 2 ee Ce 
QUARTERLY CHRONICLE. 53 
and states that he has found them in other insects and also 
in Entomostraca. In the same way as most other animal and 
vegetable parisites, these corpuscles do not constitute a cause 
of danger for the health or even for the life of the individuals 
in which they develop themselves; but their excessive 
multiplication brings on functional disorders of a serious 
nature in the organs which they have invaded. The author 
further notes that the egg of a psorospermic Bombyx has an 
acid reaction, whilst that of a healthy one has a slightly 
alkaline effect ; and he concludes that the psorosperms are in 
some way intimately connected with this acid condition. The 
Gregarinida seem daily acquiring more importance, extend- 
ing their range of victims in every direction, and yet very 
little is known of the group. 
“The Spiral Lamella of the Helix of the Ear,” by Dr. 
Loewenberg.—This is the first part of an extensive essay, 
already amounting to forty pages and two plates. The 
microscopic structures of the numerous elements of the inner- 
most ear are successively described. ‘The paper does not 
appear to contain much new matter, but, like that on caries 
above mentioned, is a very useful paper to one who works 
with the microscope. 
“The Micrographic Society of Paris.”’—The statutes of 
this society, which is apparently but just founded, are 
published in the journal. M. Charles Robin is the president, 
M. Balbiani the vice-president. At present it numbers about 
thirty members, most of whom appear to be anatomists and 
medical men. We wish this society every success, and hope 
that it may be productive of some good work, as it seems 
likely to be. At the last meeting a paper was read by M. 
Kanver “ On the Structure of Subungual Exostosis,” which 
is an interesting pathological essay. We suspect that the 
new society will be almost entirely devoted to the investiga- 
tion of human histology. 
ENGLAND.—Annals and Magazine of Natural History. 
October.—* On New British Hydroida,” by the Rev. T. 
Hincks.—The species that are briefly characterised in this 
paper will be more fully described and figured in the general 
history of the British Hydroid Zoophytes on which Mr. 
Hincks is engaged. ‘The species are Coryne vermicularis, 
from deep water off Shetland, Campanularia flabellata, which 
is set down as a new species at the same time that the C. 
gelatinosa of Van Beneden is said to be a synonym of it. 
How can this be? This species occurs at.Tenby in tide- 
pools, and off Scotland. C. gigantea, Lamlash Bay, on shell. 
-Gonothyrea hyalina, Shetland. Cuspidella (nov. gen.) humilis, 
