18 Bulletin of Laboratories of Denison University. [^'°'- -^^'^ 



inainder, either at home or abroad, to the further prosecution 

 of his research. A year and a half of great productiveness fol- 

 lowed. He bought a small tract of land adjacent to the college 

 campus, built a residence upon it and planned to devote the re- 

 mainder of his days to breeding animals on an extensive scale 

 and studying the laws of heredity, comparative psychology and 

 allied problems. But before this project was fully under way 

 his health broke down completely and he was forced to abandon 

 his home in the fight for life. 



In December, 1893, he had a severe attack of la grippe, but, 

 as was his custom in illness, went on with his work as usual. 

 Upon completion of the last examination of the term he came 

 home too ill to correct the papers, and in course of the following 

 night was atacked by a severe hemorrhage from the lungs and 

 for weeks his life hung in the balance. With the return of spring 

 his strength increased sufficiently to enable him to remove to 

 New Mexico, where the local physicians told him that he had a 

 fighting chance for a few years. He accepted the challenge 

 bravely and for more than ten years held the disease in check. 

 During the spring of 1894 his college dedicated the Barney 

 Science Hall, which had been built largely under the stimulus 

 of his presence in the faculty ; but he was never permitted to 

 work in it. 



The fourth period, from 1894 to 1904, covers the remaining 

 years of his life. 



This decade, filled with bodily pain and the worse torture 

 of anxiety and mental unrest, is yet one of the most productive 

 periods of his life. Much of the tin.e was .<-pent in the open 

 with covered wagon and camp kit, and with the return of strength 

 scientific interests again absorbed his attention. Naturally in 

 this case he again turned to geology and an extensive series of 

 articles on the geology of New Mexico bears testimonv to ihe 

 industry of these apparently aimless wanderings. The first scien- 

 tific work done in the Territory, however, was a revision of his 

 earliest important work, the Crustacea of Minnesota. As soon 

 as his geological knowledge became known his services were in 



