Donaldson, Atnencan and European Frogs. 149 



In the same way his observations on the weight of the brain 

 in R. esculenta run only 10 to 15 per cent below mine, but the 

 weights for the cords are much higher than mine, and the ratios 

 as seen in the above table, are quite impossible and hopelessly 

 irregular. 



In view of these relations of brain to cord, I conclude that Fubi- 

 Ni's results are in general not trustworthy, and therefore do not 

 require further discussion. 



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