564 
.T. O. WAKKLIN BAKL’ATT. 
llie Ciise of the kidney^ may in fart bo compared to tliat of a 
mordant, enabling structures to be exhibited which would 
otlierwise remain unstained or stain very imperfectly. Tlie 
action of Schaidach 11 is, however, exerted only upon the 
prickle layer; in the stratum gianulosum, stratum lucidum 
and stratum corneum the fibrils are not demonstrable, though 
Fio. 11, 
Section of rajiidly proliferating^ Malpighian hiyer of limnan epidermis. 
Epidermal fibrils are seen passin;f from cell to cell with varyin;^ 
decrees of ohliqnity. At the junction t>f the tihrils of adjacent cells 
nodular thickeniiiLfs are seen forming the “prickles of the Mal- 
jiiy Ilian cells. The fibrils, which are ari anged in bundles, pursue a 
curved course through the protojdasm of the prick'e-cells, passing 
round the nucleus and then passing out of the cell again. When 
viewed at right angles to their length the fibrils j resent a sheafdike 
arrangement ; if seen lying in the axis of vision the surfaces of the cells 
pi-esent a hairy aspect. X ‘220(». 
