14 Preface. 
that of domestic poverty—will be found related in 
the following book. Indeed, it may be said of him 
that he has endured as much hardship for the cause 
of science as soldiers do in a prolonged campaign. 
He spent most of his nights out-of-doors, amidst 
damp, and wet, and cold. Men thought him mad 
for enduring such risks. He himself says, “I have 
been a fool to nature all my life.” : 
He always lamented his want of books. He had 
to send his “findings” to other naturalists to be 
named, and he often lost them. But books could 
not be had without money ; and money was as scarce 
with him as books. He was thus prevented from 
taking rank among higher-class naturalists. He 
could only work in detail; he could not generalize. 
He had to be satisfied with the consolation that Mr. 
J. Gwyn Jeffreys once gave him. “Working nat- 
uralists like yourself,” said he, “do quite as much 
good service in the cause of science as those who 
study books.” Edward, however, doubted this; for 
he considered works on natural science to be a great 
help to the working naturalist. They informed him 
of what others had done, and also of what remained 
to be done. 
Those who would know something of what Ed- 
ward has accomplished in only one department of 
his favorite subject should consult Messrs. Bate 
and Westwood’s “ History of the British Sessile-eyed 
Crustacea,” where his services to the cause of science 
are fully and generously acknowledged. Of the nu- 
merous Crustacea mentioned in that work, Edward 
