x PREFACE. 
more especially relegated, had an attack of erysipelas in the 
face on the passage from Hawaii to Tahiti. His health had 
previously suffered somewhat, probably from his never having 
got thoroughly used to a sea-life. The disease rapidly took a 
virulent form, and he sunk into a state of coma, and died on 
the 13th of September, 1875. 
This sad event naturally threw a gloom over our little party. 
From the commencement of the voyage Dr. von Willemoes- 
Suhm had devoted himself with unremitting industry and zeal 
to the objects of the expedition. He had already published, in 
the Transactions of the Linnzean Society and elsewhere, a num- 
ber of valuable papers in connection with our work. He leaves 
a fine series of drawings, with full descriptions, chiefly illustrat- 
ing the development of surface Crustacea; for example, spe- 
cies of the genera Huphausia, Sergestes, and Amphion are traced 
through all their stages: he leaves also an ample official jour- 
nal. The loss of his valuable aid in working up the final re- 
sults of the expedition must, I fear, seriously affect their 
- completeness. I regarded Rudolf von Willemoes-Suhm as a 
young man of the highest promise; certain, had he lived, to 
have achieved a distinguished place in his profession; and I 
look upon his untimely death as a serious loss, not only to this 
expedition, in which he took so important a part, but also to 
the younger generation of scientific men, among whom he was 
steadily preparing himself to become a leader. 
It would have been selfish to regret the departure of two of 
our younger messmates, Lieutenant Lord George Campbell and 
Lieutenant Andrew Balfour, who got their promotion at Val- 
paraiso, and went home across the Andes. 
Writing now after the commission has come to a close, I 
think I am justified in saying that the objects of the expedi- 
tion have been fully and faithfully carried out. The instrue- 
