138 Investigations on the Life- History 



fish ; the other, that there has been a retransference of proteid from 

 the ovary to the muscle. Both these are feasible, but the former is 

 probable, from the fact that the size of the fish corresponds, not with 

 the upper-water fish of October and November, but with the estuary 

 fish of these months. The fourth examined kelt has so little muscle 

 nitrogen, only 96 grms. per fish of standard length, that it might- 

 be considered to represent a late upper-water fish ; the other three, 

 averaging 138 grins., might represent the late estuary fish. On the 

 other hand, the loss from the ovaries in and after spawning is so much 

 greater than the gain by the muscle, that it is po.-sible that some of 

 this proteid may have been transferred ; but, as no measure of the loss 

 in ova is available, it cannot be stated how much ovarian proteid 

 remained to be retransferred to the muscles. 



THE CARBOHYDRATES OF THE SALMON. 

 NOTE BY D. NOEL PATON, M.D. 



In the present investigations the Carbohydrates have not been 

 studied. They are very briefly considered by Miescher (Histochemischen 

 and Physiologischen Arbeiten 1897, Bd. II., s. 325). He finds that 

 sugar is present in the blood and liver and glycogen in the muscles and 

 liver, though in small amounts, even when the salmon has been long in 

 the river. 



