87 
plied with nerves, but that the source from which it receives 
its nerves is the innermost part of the compact layer of the 
papilla.— The Academy. 
A paper, most beautifully illustrated, on the hairs of the 
bat’s wing appears in the first part of Schultze’s ‘ Archiy’ 
for 1871. 
ConneEcTIVE Tissuz.— Cornea.—A writer in the ‘ Academy’ 
gives the following account of Schweigger-Seidel’s views on 
the lymph-spaces of the cornea, which was briefly mentioned 
in our last chronicle. 
By the action of certain reagents on the cornea there are 
brought into view, under the microscope, a series of irregu- 
larly stellate, multiramified, and nucleated bodies, which 
have been hitherto regarded as essential constituents of the 
corneal tissue, and are known as “ connective-tissue-corpus- 
cles.” ‘These corpuscles appear under the microscope dark 
on a light ground, and have received the further appellation 
of “ positive images,’ to distinguish them from a series of 
negative images, appearing light on a dark ground, which 
are observed when the cornea is treated with nitrate of silver, 
and which were discovered by Recklinghausen. The nega- 
tive images exactly resemble the positive in form, and are 
considered by Recklinghausen to be spaces from which the 
lymphatic canals take their origin. He calls them “ Saft- 
kanalchen,” and has described other similar ones in the cen- 
tral tendon of the diaphragm. He further considers that the 
connective-tissue-corpuscles lie within the “ Saftkanalchen,” 
each process of the former being contained within a corre- 
sponding process of the latter. Schweigger-Seidel, who has 
already combated the reality of the “‘ Saftkanalchen” of the 
diaphragm, brings forward evidence to prove that the nega- 
tive images are not spaces, but masses of albuminous sub- 
stance, and that they are identical in nature with, and not 
external to, the positive images. Further, both these images 
are not due to any structure pre-existing in the cornea, but 
are artificial products caused by the action of the reagents 
employed. Since the cornea corpuscles have been made use 
of by Stricker and others as a means of investigating the 
changes produced by inflammation, these observations will 
have a special interest for pathologists. 
Schweigger-Seidel believes in the existence of interstitial 
spaces from which the lymphatics originate, and has suc- 
ceeded in injecting a series of wide anastomosing canals into 
the cornea, confirming Bowman’s and C. F. Miiller’s results 
in this matter. He finds that the deeper side only of these 
canals is lined with an epithelium. The cells composing 
