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gland opening into its sac. The two outer fibrous layers of 
the hair sac have no sharp line of demarcation to separate 
them from the surrounding connective tissue, but the inner 
or hyaline coat is highly developed, and, after being con- 
structed beneath the hair bulb, widens out and encloses the 
Tastk6rperchen (touch-corpuscles), one of which organs is 
connected with each hair. 
The nerves of the wing may be considered to consist of five 
layers, ¢.e. there is one occupying the centre of a transverse 
section of the wing, which gives off on each side of it 
four others, and these are successively finer and finer as they 
approach the opposite surfaces. The inner layer and the one 
immediately on each side of it consist of nerve fibres with 
dark borders, the other layers of pale fibres only. The Tastkor- 
perchen are connected with the second layer. The fifth 
layer of finest fibres ends as a network between the innermost 
layer of cells of the Malpighian layer of the epidermis. The 
Tastkorperchen are shaped like a fir-cone, with a rounded 
apex turned inwards. They lie immediately below the root 
of the hair; and their core or central substance is formed of 
a prolongation of the cells forming the two root-sheaths of 
the hair. Their length is 00259, their breadth 0°0175 mm. 
A nerve containing about six dark-edged fibres is distributed 
to each Korperchen. Just before the nerve reaches this 
organ, it splits into two, and three fibres pass to one side of 
it, three to the other. The fibres are then wound round the 
body so as to sheath its cellular core. Dr. Schobl thinks it 
probable that the fibres on one side are continuous with those 
on the opposite side, and that there is thus a bipolar arrange- 
ment here. He attributes to the fine network of pale nerve- 
fibres belonging to the fifth layer the appreciation of tempera- 
ture, pain, &c.; to the Tastkdérperchen the highly exalted 
sense of touch. It is curious that both kinds of nerve 
endings are connected with the Malpighian layer of the skin. 
In conclusion, the author states that he believes he has found 
similar bodies in peculiarly sensitive places in other mammals, 
and promises an early account of them.— Academy. 
