QUARTERLY CHRONICLE OF MICROSCOPICAL 
SCIENCE, 
———— = 
Cell Pathology.—K undrat (‘ Med. Jahrbiicher,’ 1871, Heft 
2, p. 226) has investigated the pathological changes of the 
serous epithelium (endothelium), especially that of the peri- 
toneum in inflammation, tubercular growth, &c., and finds 
in both these cases enlargement of the endothelial cells and 
multiplication of their nuclei, pointing to the production of 
new cells from them. He also thinks that new connective 
tissue is produced by fibrous prolongations of the endothelia 
and fibrillar lamination of the cell substance. The latter 
observation leads us back from the views of Virchow to the 
older conception of Schwann and others, lately revised by 
Krause (see the last number of this Journal). 
Inflammation.—Hansen has investigated in Stricker’s patho- 
logical laboratory the alterations produced by inflammation 
in the corneal corpuscles of mammalia; the investigation of 
Stricker and Norris having been confined to the cornea of 
the frog. The method of investigation consisted in pro- 
ducing traumatic inflammation of the cornea in cats and 
rabbits, and examining sections either unprepared or tinted 
with gold. Hansen’s observations confirm those of Stricker 
and Norris as to the changes produced in the corneal cor- 
puscles, and the production from them of new elements, 
which he cannot admit, with Cohnheim, to be migratory 
cells derived from the vessels. In another set of experiments 
the living cornea was irritated with nitrate of silver (as pre- 
viously done by Genserich), so as to produce inflammation, 
and stain the structure at the same time. From these also 
the conclusion was drawn that the corneal corpuscles divide 
and multiply, so as to be replaced by a number of small cells, 
which are nothing but pus-corpuscles (‘ Medizinische Jahr- 
biicher,’ 1871, Heft 2, p. 210). 
Circulation.—Stricker has published (‘ Medizinische Jahr- 
biicher,’ 1871, Heft 2, p. 123) a further account of the 
method of observing the circulation in mammalia, which he 
VOL. XI.—NEW SER. EE 
