ABSENCE from Liverpool has prevented me replying to Mr. J. T. Cunningham's criticisms of the work on the anatomy of the Plaice recently published by Mr. Johnstone and myself. The passage which Mr.

IN the Memoir on the Plaice by Messrs. Cole and Johnstone, reviewed in NATURE of March 20 (p. 459), there is a reference to Steenstrup's work on the metamorphosis of Pleuronectidæ which I think the ...