14 INTRODUCTION. 



enthusiasm. His class, at first slowly, but afterwards more 

 rapidly, increased in numbers, and, what is of more import- 

 ance, grew in quality. The room allotted to him soon became 

 far too small and steps were taken to provide for him, for 

 myself, whose wants were also urgent, and for the biological 

 studies generally, adequate accommodation ; but it was not 

 until Oct. 1877 that we were able to take possession of the 

 new quarters. 



Even this new accommodation soon became insufficient, 

 and in the spring of 1 882 a new morphological laboratory was 

 commenced in accordance with plans suggested by himself. 

 He was to have occupied them in the October term, 1883, but 

 did not live to see them finished. 



As might have been expected from his own career, he 

 regarded the mere teaching of what is known as a very small 

 part of his duties as Lecturer ; and as soon as any of his pupils 

 became sufficiently advanced, he urged or rather led them to 

 undertake original investigations ; and he had the satisfaction 

 before his death of seeing the researches of his pupils (such 

 as those by Messrs. Bullar, Sedgwick, Mitzikuri, Haddon, Scott, 

 Osborne, Caldwell, Heape, Weldon, Parker, Deighton and others) 

 carried to a successful end. In each of these inquiries he himself 

 took part, sometimes a large part, generally suggesting the 

 problem to be solved, indicating the methods, and keeping a 

 close watch over the whole progress of the study. Hence in 

 many cases the published account bears his name as well as 

 that of the pupil. 



In the year 1878 his Monograph on Elasmobranch Fishes was 

 published as a complete volume, and in the same year he received 

 the honour of being elected a Fellow of the Royal Society, 

 a distinction which now-a-days does not often fall to one so 

 young. No sooner was the Monograph completed than in 

 spite of the labours which his lectures entailed, he set himself 

 to the great task of writing a complete treatise on Comparative 

 Embryology. This not only laid upon him the heavy burden 

 of gathering together the observations of others, enormous in 

 number and continually increasing, scattered through many 

 journals and books, and recorded in many different languages, 

 as well as of putting them in orderly array, and of winnowing 



