QUARTERLY CHRONICLE. 257 
propagation in the Aphides. In relation to other insects, he 
considers it as characteristic, that whilst it is necessary in 
general to draw a distinction between the epithelial and 
vitelline cells, and that these last serve solely to nourish the 
embryo, the epithelial cells in this case, on the contrary, serve 
for the epithelium and vitelline cells of the larve. 
Journal de l’Anatomie et de la Physioligie (Robin’s)—In the 
number of this periodical issued for the months of July and 
August, will be found a paper “ On the Organisation of the 
Linguatule of Serpents,’ by M. Jacquart, the best part of 
which is the plate. The nervous system is well figured, the 
author having established the fact of the existence of a sub- 
cesophageal ganglion, but he has failed to trace any cerebri- 
form ganglion. The embryos of the Linguatule described 
are figured, and the author remarks that they are quite 
similar to those of the Lernzans. 
The number for September and October contains some 
good papers. 
“* Microscopic Researches on the Lymphatic Vessels of the 
Penis,’ by M. le. Docteur Al. Belaieff.—This paper is accom- 
panied by two plates illustrating preparations described by 
the author. The bulk of the paper is occupied by a descrip- 
tion of the method of preparation adopted, the disposition 
and form of the lymphatics being best shown by the plate. 
“* Study on the Development of Fibrillous (called Connec- 
tive) and Fibrous Tissues,” by M. le Docteur E. C. Ordonez. 
—This is a long essay illustrated by two plates. The author 
finishes by giving the following conclusions :—1lst. The cor- 
puscles, called indifferently plasma-cells and corpuscles of 
connective tissue, are not permanent elements belonging 
peculiarly to fibrillous or connective tissue, but rather transi- 
tory elements belonging properly to elastic tissue, and in 
which the existence of a cavity cannot be demonstrated by 
any means. 2nd. The primitive fibrille of fibrillous tissue, 
called “ connective,” possesses no central canal ; no procedure 
can demonstrate such a canal. 3rd. The elastic fibres are 
certainly not canaliferous. Hence the theory proposed by 
Virchow in his ‘ Cellular Pathology’ is no longer supportable, 
for it has no foundations but hypotheses, and our study has 
led us to oppose to these hypotheses, facts, which any observer 
can verify. 
“ Researches on the Structure of the Pulmonary Vesicle, 
and on Emphysema,” by M. Villemin.—This paper appears to 
be of some pathological interest. It was originally com- 
municated to the French Société de Micrographie. 
