392 THE JOURNAL OF BOTANY 
has been opened up, provision should be made for these isolating 
barriers. The Malay States Government has recently per- 
manently reserved belts of jungle two miles thick crossing the 
should be adopte ted wherever it 3 is te ssl on 
Dr. Willis’s book is an advance on Dr. Nicoll’s Tropical 
Agriculture, previously the only ewig in English on the subject, 
and should do much to further the progress of scientific agricul- 
ture in the Tropi in cause in which the author has worked dili- 
gently and with great success. J. B. Carruruers. 
Darwin and Modern Science: Essays in Commemoration of th 
Centenary of the Birth of Charles Darwin and of the Pipeeh 
Anniversary ifs the tale of the ‘ Origin of Specves. 
Edited by A. C. Szwarp. Cambridge Unversity Pree 
ice 18s. net. 
The Foundation as Be Origin of Species’: Two Essays written 
1842 4 by CHARLES Darwin. Edited by his son 
ee Deion Cambridge University Press. 19 és 
once said that both of them, though for different reasons, are of 
the highest — and value. To commence with the latter and 
smaller volume, we have in it the two trial essays out of whic 
the Origin of Species was eventually evolved. The importance 
which its siren attached to the second sketch is shown by a 
wi 
be accepted even by one competent judge, it will be a considerable 
step in science.’ 
e who have the time and desire to make a study of the 
pioomatst stages by which Darwin arrived at his final conclusions 
will find a comparison of the three documents a very fascinating 
occupation, though it is aged — to attempt any suc 
analysis here. There is, how one point which may be 
mentioned as an example of the ete, Fe to which we have been 
alluding. Everyone remembers the aoe passage at the end 
of the Origin which commences: “ There is grandeur in this view 
of life.’ This ste, eh in practically sdeniiunt terms, is also to be 
found at the termination of each of the two essays printed in this 
volume. In thes cs a portion of this age reads: ‘ having 
been originally breathed into matter under w forms, perhaps 
into only one,’ and the words which we Lea ‘aclu were, so 
it is stated in a note, added in pencil between the lines. In the 
