1858-64-] DR. GEORGE ENGELMANN. 141 



not rely upon speculations in his scientific researches, 

 but on facts only, ascertained by severe and searching 

 studies. He was strictly true in scientific matters." 

 Both have followed constantly the same principles in 

 their researches and classifications, and Agassiz much 

 admired Engelmann's great works on the Cactacece, 

 the Yucca, the Agave, Jaucus, Coniferce, the American 

 oaks, etc., etc. After the passionate discussions on 

 the " Origin of Species," it was a great comfort to 

 Agassiz to find a botanist not given to speculations 

 and theories, but standing firmly on plain and proved 

 facts. 



Agassiz passed the summer at Nahant, where he had 

 a seaside laboratory close by the cottage of Mrs. 

 Agassiz, a charming place of resort for a naturalist, 

 much enjoyed by him and his children. Naturally 

 Agassiz kept every one round him busy, directing the 

 microscopical studies and researches, superintending 

 the drawings, and giving his leisure time to dreams of 

 schemes to increase the usefulness and wealth of his 

 dear museum. 



Now a word in regard to the name given to his 

 creation, no longer in its infancy, but in full vigour. 

 Museum of Comparative Zoology is a very long title, 

 especially for common people ; and for a man like 

 Agas"siz, who always courted popularity, it may seem 

 strange that he made such a choice. First, the name 

 is a pleonasm, for it is impossible to work at zoology 

 without making comparison. It is not so with anat- 

 omy ; and Cuvier, in creating comparative anatomv, 

 used a proper term for a new science. Agassiz knew 



