BIOGRAPHICAL SKETCH 19 



"I returned with renewed energy to my laboratory work, 

 which I had omitted for some months. 



"After I discontinued my medical studies, I had the thought 

 to work at the University of Pennsylvania for a Ph. D. degree, 

 and during some portions of the years 1885 and 1886, 1 studied 

 with close application, mathematics, with a Mr. Howard 

 Lukens. He undertook in coaching me to prepare for passing 

 the preliminary examinations which would allow me to enter 

 the University as a student of the Junior year. The Dean of 

 the University had arranged to allow me to pursue my studies 

 in chemistry and botany with a view to the degree, if I should 

 satisfactorily pass some preliminary examinations in mathe- 

 matics, German, French, and English literature. The require- 

 ments in mathematics were considerable, and Mr. Lukens 

 worked conscientiously with me in that branch. Mr. Nathan 

 Haskell Dole, the writer and translator, was then living in 

 Philadelphia, and he was introduced to me by Mr. Henry Ho- 

 bart Brown, the principal of a boys' school in the city, as the 

 most competent person to fit me for the examinations in the 

 other branches, and we spent the winter in as serious work as 

 my health permitted. I do not wish to forget mentioning Dr. 

 Frederick P. Henry, a well-known practitioner in Philadelphia, 

 and at the time when I met him, a professor of Histology and 

 Microscopy at the Polyclinic College. 



"He was a warm advocate of the higher education for 

 women, and later on became a professor of the Practice of 

 Medicine in the Woman's Medical College. I took one private 

 course of his instruction in his branches at the Polyclinic. 

 Dr. Henry was interested in my scientific work, and after our 

 lessons, he would often keep me in his laboratory discussing 

 subjects relating to science and literature. He was a fine 

 classical scholar. . . . 



"Dr. Henry had heard me speak of a Mr. Thompson, the 

 keeper of the snake-house at the Zoological Garden. I had, on 

 several occasions, assisted him in feeding the rattlesnakes 

 according to Dr. S. Weir Mitchell's method of forced feed- 

 ing of reptiles in confinement. He was desirous of seeing 

 the process, and I arranged to take him to the Zoo with me 



