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J. R. M. INNES AND A. CARSTEN 













Fic. 7. A. \ ritflual skeletal muscle from same rat as P'ig. li, shdwiiiy nccio^is, waxy 

 degeneration, loss of muscle nuclei in center, and some proliferation at periphery of 

 lesion. B. Another case with waxy degeneration, calcification and early fibrosis. 

 Hematoxylin-eosin, X 80. 



a spinal oli,s;odendros;lionia (Innes and Borner, 1961). Apart from some 

 head tilting and circling in the rats with the cranial tumors, all showed 

 virtually a comparable clinical picture. 



The malacic lesion occurring after a long latent period and due to 



