116 
ECOLOGY OF WOODLAND PLANTS NEAR 
HUDDERSFIELD. 
‘¢THr Ecology of Woodland Plants in the Neighbourhood of 
Huddersfield,” which recently appeared in the Journal of the 
Linnean Society,* has won for its author the degree of Doctor 
of Philosophy of the University of Ziirich. This is a guarantee 
of the quality of the work, but it must not be thought that the 
paper is of ‘Swiss manufacture.’ Even a casual perusal will 
reveal much careful investigation which could only be done on 
the spot, and the facts which form the basis of this paper were 
already recorded before Dr. Woodhead went to Ziirich early in 
1905. There, we have good reason for saying it, his work 
received the hearty approval of Professor C. Schréter, one of 
the leaders in Plant Ecology, and one can see the impress of 
this great master on the finished publication. 
Readers of ‘The Naturalist’ have already had a sample 
of the kind of investigations in ‘Notes on the Bluebell’ 
(‘ Naturalist,’ 1904, February and March). The present paper 
opens almost where the ‘ Bluebell’ paper left off, the first study 
being Birks Wood, the one which was figured in 1904. Reduced 
figures are given of maps originally prepared on the Ordnance 
Survey ‘25 inches to one mile’ sheets. One of the maps is a 
soil-map of the wood; another shows the distribution of oak, 
beech, Scots elm, sycamore, and conifers in the same wood. 
The other three maps show common plants of the under- 
growth. A comparison of these excellent maps shows at a 
glance that the Bracken (P/erzs) occurs mainly under the trees 
* Vol. XXXVII., 1906, pp. 333-406. 
Naturalist, 
