As a student and investigator Dr. Bruce was eminently characterized by perse- 

 verance. Always alive to all that was passing around him, he was keenly interested 

 in many things, but no outer attraction could draw him from the subject to which 

 he had set his hand. Difficulties only added zest to the work, and his indefatigable 

 zeal never flagged, even when there seemed to be little hope of success. 



All the members of our party, at Beaufort in 1885, will remember his efforts to 

 encourage out-door exercise in a climate where exercise is so repulsive. As I watched, 

 at evening, his boyish enthusiasm in athletic games, I could scarcely believe that he 

 was the same person who had struggled all day long, week after week, with the 

 perplexing obstacles which an unfavorable climate, the absence of all adequate facili- 

 ties, and the most refractory character of his material opposed to his study of the 

 Embryology of Limulus. 



In the laboratory all his strength of mind and body was bent upon fhe problem 

 in hand, but I always felt the fullest assurance that he was in no danger of becom- 

 ing a narrow specialist, for whenever he was not employed in research, or in the rec- 

 reations into which he threw himself with equal energy and enthusiasm, his mind 

 was occupied with the consideration of the bearing of his special researches, both 

 upon the broad problems of humanity, and upon his own personal training and 

 development. 



As regards his scientific researches, I have to speak rather of his promise than 

 of results achieved. 



Cut off as he was, just as he was beginning to show his power to question 

 nature for answers to new problems, most of his results were very incomplete, and 

 as he had worked, here and there, upon a very comprehensive subject, the embry- 

 ology of Arthropods, upon which he had purposed to spend several years, he had 

 done little or nothing to bring together his various lines of research. 



When he presented himself for examination for the degree of Ph. D. he had 

 made many observations upon the embryology of Insects and Arachnids, and 

 although he was still carrying on this research, and adding daily to his store of 



information, he, at my advice, wrote out, and submitted as his thesis, a statement of 







the results of his study up to that time. 



During the following year he continued the work, and if he had been able to 

 re-write the thesis, he would have made many important additions. As he was, 

 by nature, incapable of dwelling upon a subject after he had reached his results, he 



