so that I have to thank him, not only for a material, but 

 for an intellectual, income. What is the spirit which has 

 inspired all these things, and which bring not only admi- 

 ration but love ? Is it a matter of cells and fibers ; of fat 

 and phosphorous ; of many and deep cerebral convolu- 

 tions? God forbid the thought. Rather let us believe 

 that when the heart shall have ceased to beat, and the 

 brain to suffer its molecular changes, the same great mind 

 will then, as now, and in Heaven as upon earth, pursue 

 the study of spiritual creatures, and direct less gifted ones 

 into the paths which have already led him to the loftiest 

 view of Nature and of Nature's God." Alas ! the great 

 brain of the naturalist has been weighed, although a year 

 had not passed since these words were spoken. The 

 weight of his life-work will not be known till many gener- 

 ations have passed away. 



Another student says that " Whenever he saw a stu- 

 dent who would study nature, he opened the way for him, 

 took him into the laboratory, opened his treasures before 

 him and directed his studies, and this too without any ex- 

 pectation or thought of a pecuniary reward as a return. 

 I do not know of a single student who ever paid him a 

 dollar as a tuition for his instruction in natural history 

 studies. Young men came and staid and studied as long 

 as they would, and, as far as tuition was concerned, with- 

 out money and without price." It is from such sources 

 that we get the most accurate idea of the real man. We 

 fondly linger over these personal reminiscences because, as 

 has been said, " good men make the earth wholesome." 



It is interesting to know that notwithstanding this 

 ever open-hearted generosity he suffered no small priva- 

 tions. When he came to America he w T as laboring under 

 a debt of $20,000, incurred by the financial embarrass- 

 ment of a friend who was engaged with him in publishing 

 his great work on Fossil Fishes. After his release from 

 his engagement by the Prussian Government, he accepted 

 a professorship at Cambridge at $1500 per year. Dr. 

 Lonng says of him, " He then commenced his labors at 

 Cambridge — labors which he has never discontinued, un- 



