H2 THE STORY OF A BIRD LOVER 



an expedition for purposes connected with geo- 

 logical and paleontological research to the Bad 

 Lands of Wyoming, and had spent some little 

 time in Colorado. They were so enthusiastic on 

 their return as to the wealth of animal life in the 

 country, dwelling particularly on a region high in 

 the mountain chain near the headwaters of the 

 Arkansas River, that I planned, if possible, to 

 spend the summer vacation of the year 1878 

 in Colorado. I would have started early in the 

 season but that, in addition to my duties as cura- 

 tor of the museum, I was called on this year to 

 give a course of lectures, supplemented by lab- 

 oratory work to the senior class. These lectures 

 dealt with the comparative anatomy of vertebrate 

 animals, and were given during the second term 

 of the senior year. Such a course continued to 

 be part of my duties for the next few years. 



Among the students of the first class of this 

 kind which worked with me I must mention two 

 men, both of whom have become notable natural- 

 ists : William B. Scott, now and for many years 

 Professor of Geology and Paleontology in Prince- 

 ton University, and Henry Fairfield Osborn, 

 Professor in Columbia University, Curator in the 

 American Museum of Natural History, and 

 United States Paleontologist. After their study 

 with me in their senior year both of these gentle- 

 men took part in the expedition to Colorado, and 



