GENERATION OF ANIMALS 



to whom I owe, among many other things, the oppor- 

 tunity of undertaking this translation. The whole of 

 the translation has been read through by my col- 

 leagues Mr. H. Rackham and Dr. F. H. A. Marshall, 

 F.R.S., and also bv Dr. Sydney Smith ; for valuable 

 help with some difficult passages in the Greek I am 

 indebted to Professor R. Hackforth, and to Mr. Hugh 

 Tredennick, who has also read part of the translation ; 

 for much assistance in biological matters I am in- 

 debted to Dr. Marshall, to Dr. Joseph Needham, 

 F.R.S., to Dr. Smith, and to Miss M. E. Brown. 

 Professor A. S, Pease of Harvard University has 

 placed me under a great obligation by most courte- 

 ously securing for me microfilms of Bitterauf 's two 

 pamphlets and of Dittmeyer's edition of Moerbeke's 

 translation, none of which I could find in this 

 country. It is a special pleasure to acknowledge 

 this help from America. I am indebted to the 

 staff of Cambridge University Library for excellent 

 arrangements made for me to read the microfilms 

 and also the Scot manuscripts. Dr. P. J. Durrant 

 suggested to me that the mention of oil in connexion 

 with lead-ore (see Bk. II. 735 b 17) might indicate 

 an early process of flotation. Finally but not least 

 I should like to express my appreciation of the kind- 

 ness of Mr. R. Elmhirst, Director of the Marine 

 Biological Station at Millport, Great Cumbrae, who 

 gave me a room in which to work at my translation 

 during a visit to Millport in the summer of 1938 and 

 also included me in an expedition to Loch Goil for 

 collecting marine animals closely alUed to those often 

 mentioned by Aristotle. 



A. L. P. 

 Easter Eve, 1942 



xxxvii 



