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POPULAR SCIENCE REVIEW. 
language and style of a gentleman who feels the importance of his subject, 
and is determined to give full admission to the skill and knowledge of his 
opponent. But having made this admission, we must confess that it is not 
a work which can affect Mr. Darwin other than to afford him a good- 
natured smile at the grave shallowness of his adversary. We do not 
mean to insinuate that Lord Ormathwaite may not be well versed in other 
subjects, but unhappily in all that relates to geology and biology he is most 
deplorably ignorant. Hence we do not find that in a single instance he has 
really attempted to upset Mr. Darwin’s views. He opposes them, of course, 
but there is not a single page of his volume in which he attempts seriously 
to disprove Mr. Darwin’s ideas. W e do not say that he admits them, for 
he objects to them as forcibly as he can ; but what we do say is this, that there 
is not a single argument which he uses that Mr. Darwin could not readily 
expose the fallacy of if he wished. A single sentence or so, reproduced 
from the volume, will show how ignorant of Natural Science is the author, 
and will spare us the trouble of dealing further with his work, and our 
geologic readers of purchasing it. Alluding to Mr. Darwin, he says, p. 73 : 
“ He speaks of millions of years, and in his diagram he represents 10,000 
or 14,000 generations ; but the existing world, of U'hich either from history or 
tradition ire have any knowledge is comprised within at most 4,000 years. 
.... The whole number of existing generations of man of whom we can 
have the faintest knowledge have existed, is 120. It is quite evident, there- 
fore, that 'Mr. Darwin assumes as the ba«is of his argument periods of time 
purely imaginary ; he can have no shadow of proof that the world has existed 
for 14,000 generations, or 470,000 years.” 
This is enough to show the range of knowledge from which the author 
seeks to prove his case, and of course it at once excludes his opinions from 
the consideration of geologists. The book is altogether rather well written, 
and shows no display of bad taste whatever. 
A TREATISE ON INTESTINAL WORMS * 
T HOUGH this is strictly a medical work, it is also a scientific one, for 
assuredly nothing is more scientific zoologically than the pursuit of 
knowledge in the case of the Entozoa. But Dr. Cobbold, who is at once the 
most skilled and celebrated English helminthologist, has, in the work now 
before us, united his scientific knowledge par excellence to the patience and 
care of the physician, in endeavouring to pursue his studies practically on 
the patient. In a word, then, the volume which he has now written is a 
practical and scientific one. It is essentially a book which the physician 
must read if he desires to be an fait of the practice of those who know most 
of the subject, and it is furthermore a book from which the general reader 
may add materially to his knowledge of the habits and distribution of those 
various forms of “worms ” which attack the human system. Dr. Cobbold’s 
* 11 Worms ; a Series of Lectures on Practical Helminthology, delivered 
at the Middlesex Hospital.” By T. Spencer Cobbold, M.D., F.R.S. London : 
J. and A. Churchill, 1872. 
