148 SCIENCE SKETCHES. 
Of all these lectures the most valuable and the 
most charming were those on the glaciers. In 
these the master spoke, and every rock on our 
island was a mute witness to the truth of his words. 
Equally charming were the reminiscences of his 
early life and of his fellow-workers in science, 
Schimper and Braun in Munich, Valenciennes and 
the rest in Paris, and of the three men he acknowl- 
edged as masters, Cuvier, Humboldt, and Dodllin- 
ger. “TI lived at Munich,” he once said, “ for 
three years under Dr. DGllinger’s roof, and my 
scientific training goes back to him and to him 
alone.” 
He often talked to us of the Darwinian theory, 
to which in all its forms he was most earnestly 
opposed. Agassiz was essentially an idealist. All 
his investigations were to him, not studies of ani- 
mals or plants as such, but of the divine plans of 
which their structures are the expression. “That 
earthly form was the cover of spirit was to hima 
truth at once fundamental and self-evident.” The 
work of the student was to search out the thoughts 
of God, and as well as may be to think them 
over again. To Agassiz these divine thoughts 
were especially embodied in the relations of ani- 
mals to each other. The species was the thought- 
unit, the individual reproduction of the thought in 
the divine mind at the moment of the creation of 
the first one of the series which represents the 
species. The marvel of the affinity of structure — 
of unity of plan in creatures widely diverse in 
habits and outward appearance —was to him a 
result of the association of ideas in the divine mind, 
