144 
of Maurer himself'), that also the first germs of the dermal glands 
of Triton and Anura occur in rows. 
The dermal glands of Promammalia have thus Ae in the 
Mammalia in diverging direction: the hairs, as well as the dermal 
glands of the mammals have arisen from them. The complex of 
hair and sebaceous glands is to be derived either from a compound 
gland, the follicles of which have taken a different direction of 
development, or what seems more probable to me, from the union 
of a number of glands into one follicle, in the same way as hairs 
may be united into a bundle. This last derivation may be 
strengthened by the fact that a number of femoral organs too, some- 
times form a bundle with a common follicle. | found this in Lacerta 
agilis (see fig. p. 143). 
Dales p. Log. 
