OF WASHINGTON. 355 



Here the end came and he passed away peacefully in the arms of 

 his faithful wife. 



Up to the very end his interest in entomology did not leave 

 him. Only three days before his death, when a basket of his blue 

 Nelumbo was brought into his room, he noticed a small moth 

 flying about the flowers. He asked that the basket be brought 

 to him and he collected the moth in a small cyanide bottle that 

 he still carried in his vest pocket. 



When the best efforts of contemporary entomologists were de 

 voted to descriptive work, it was a pleasant contrast to see Mr. 

 Hubbard's activity in that slightly cultivated field of biology in its 

 wider sense. The best biological studies are still mostly made 

 in insectaries and by persons professionally interested in such 

 work. Observation of insect life in the open air requires quick 

 ness of judgment, correctness of observation and those peculiar 

 qualities which Hubbard possessed so highly and in which he has 

 never been surpassed. 



In his entomological studies he was greatly assisted by his 

 knowledge of botany and his intimate acquaintance with the 

 habits of birds and animals. 



Closely connected with his other observations were his 

 achievements in economic entomology. Being an expert horti 

 culturist and possessing a considerable knowledge of chemistry 

 and mechanical invention, he was admirably adapted for such 

 work. His invention of the kerosene emulsion has been already 

 alluded to. Various improvements of the cyclone nozzle as it 

 was then known, and other insecticide appliances are due to Mr. 

 Hubbard, who personally experimented largely at his place at 

 Crescent City. 



Mr. Hubbard was an excellent explorer. In the investigation 

 of a new region an explorer, as opposed to the miscellaneous 

 collector, is able not to miss the species that are really character 

 istic. To do this requires not only an intimate knowledge of the 

 order of insects to be explored but also of the hiding places and 

 modes of life and the possession of sufficient agility and ability to 

 get at those insects in wild or inaccessible parts of the country. 

 Many naturalists had visited our caves ; but our knowledge of 

 their fauna was very imperfect till Mr. Hubbard's investigations. 

 His agility and perseverance in the work were remarkable. 



