246 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL.84 



ncntly into the view of very many biologists who perhaps would not 

 have heard of him for years, nevertheless he had already carried on 

 certain investigations of prime importance, and he has continued to 

 publish papers, differing in length, always of importance, and all 

 touched with an originality and with an ability to look below mere 

 observed facts and to delve into the reasons for things and their broad 

 bearings. It is this that sets him apart from most other entomolo- 

 gists. His broad biological training has something to do with it ; but 

 more than that, it is in the man himself. He makes what is apparently 

 a simple observation ; and then he thinks about it. and it becomes a 

 significant thing. 



A constant stream of papers has come from his laboratory, largely 

 of his own authorship but sometimes in coauthorship with some one 

 of his associates. Imaginative as he is. there is a conservatism about 

 him which, combined with his broad knowledge, prevents him and his 

 force and his institution from making mistakes, from taking up 

 projects that are bound to fail. 



His visit to the United States in 1913 was a delight to all of us: 

 and that it was a pleasure and an inspiration to him is beautifully set 

 forth in his imposing volume entitled " Les Sciences biologiques 

 Appliquees a I'Agriculture et la Lutte Contre les Ennemis des Plantes 

 aux fitats-Unis." 



Traveling with him as I did through New England and then to the 

 Pacific Coast, I was greatly interested to watch his methods. The 

 experience was absolutely novel to him. Everything he saw was new. 

 He was not disturbed ; he did not become excited, and he missed 

 nothing. I had arranged the journey in advance, and, as is my 

 custom, had notified people along the route of the time of our arrival. 

 As it turned out, this was not Marchal's way ; and as a result before 

 half the journey was over we were two weeks behind our schedule. 

 I expostulated gently, but while the expostulations were courteously 

 received they were unavailing. He insisted on looking into each thing 

 until he understood it thoroughly ; and further than that, he took 

 photographs and collected pamphlets and documents and did a lot 

 of other things that seemed really unnecessary. But when his book 

 finally appeared a year later, it became jjerfectly obvious that every- 

 thing he had done was with a distinct plan and that after all he had 

 wasted no time. On the whole trip there were no enthusiastic ex- 

 pressions of pleasure. That is not his way. But an occasional remark 

 would show a very keen appreciation. He was looking at things com- 

 paratively all the while. As we crossed desert regions he spoke of 

 the similarity of the vicarious vegetation to that of Algeria. When 



