CANCEKOUS TUMOKS. 



21 



coiirse of tlie niuscylar fibres, the first change observed is a 

 small-celled infilti-ation betiveen the fibres, -which remain quite 

 intact, and this accumulation progresses, pushing the fibres 

 more and more apart. (Two photogi-aphs, Nos. 30 and 31, 

 sbown.) 



This condition is not peculiar to the muscles in the neigh- 

 borhood of skin cancers. I have observed it in the neighbor- 

 hood of cancers of the mammary gland, and of man3' other 



riff. 3. 



TransvtJTse peetlon of nmscle near a caneer, showing the sroall-celled 

 inliitration JjctAvoen the muscular fibres. Froiu photo- 

 micrograph ?so. 30. Magnified 200 diameters. 



parts. If the section be made parallel to the course of the 

 muscular fibres the images obtained are not so readil}-^ un- 

 derstood. In such sections we not merely see the cell-infil- 

 tration between the fibres, but similar cells above and below 

 individual fibres may readily'' be supposed to be embedded in 

 their substance, as seen in the next photograph, which is taken 

 from the vicinity of a medullarj^ cancer of the 2^arotid gland. 

 (One photograjih, ]Sio. 32, shown.) 



