PREFACE. xl 
to Staff-commander Tizard, the chief of the naval scientific 
staff, for the friendly readiness with which he has always as- 
sisted us, and placed his valuable observations and data at our 
disposal; and to Lieutenant Aldrich, Lieutenant Bromley, Lieu- 
tenant Bethell, and Lieutenant Carpenter, for the patience and 
eare with which they superintended the dredging and trawling 
operations, and the determinations of ocean temperature, all of 
which fell into their immediate province. And here I must 
not omit to record my debt of gratitude to my friends the 
blue-jackets, who, greatly to their credit, treated us civilians 
throughout with as much respect and consideration as they did 
their own officers. 
The members of the civilian scientific staff under my direc- 
tion have already in various ways given evidence of their in- 
dustry. I think, however, I should not be doing my duty if I 
did not take this opportunity of recording my personal obliga- 
tion to Mr. John Murray, who, while he has been bringing out 
highly important results by his own investigations, has under- 
taken the task of cataloguing and seeing to the security of the 
vast collections which have accumulated during the voyage. 
The friendly hospitality and the ready assistance which we 
everywhere received, not only from the representatives of En- 
gland and America, but also from those of foreign nations, 
added much to the pleasure of the eruise. Some few of these 
many benefits will be acknowledged in their places in the jour- 
nal, but the names alone of the kind friends who have come 
forward to welcome and aid us would fill a goodly volume. 
I can not, however, close without recording, on my own part 
and on that of the civilian scientific staff, our deep sense of 
the courteous consideration which we uniformly received from 
the Hydrographer to the Navy, the head of the department 
with which we were associated; and our hearty thanks to Mr. 
