982 THE JOURNAL OF BOTANY 
WestmornanD Mosses ann Hepatics.—In a county so often 
visited on account of its many natural charms, amidst which 
ample scope is offered to the plant-lover, it is not surprising that 
careful attention should have been given to Mosses and Hepatics. 
interesting species have come to light in recent years e 
county, and the present writers have pleasure in putting these on 
record. They are, amongst Mosses :— 
Dicranella curvata Lindb 
Campylopus subulatus Schimp. } Grasmere and Langdale. 
. . Ambleside. 
Leptodontium recurvifolium Lindb. Patterdal , Mr. H. N. Dixon. 
Meesia trichoides Spr. Harter Fell, Mardale. 
Webera Ludwigit Schimp. Langdale. 
Bryum cyclophyllum B. & 8. 
Hypnum ochraceum var. flaccidum Milde. Easedale, Grasmere. 
It may be noted that thirteen of the species included in Mr. 
Stabler’s list are now recognised as merely varieties; so that 
deducting these and adding recent finds the county can at pre- 
sent claim 352 Mosses, excluding Sphagn 
The following Hepatics were collected in 1914 i— 
Plagiochila asplenioides var. minor f. laxa. 
Cololejewnea microscopica (Taylor) Schiffn. Langdale. 
LEONORA ARMITAGE: C. H. BrnsTHap. 
REVIEWS. 
The Mutation Factor in Evolution, with particular Reference to 
nothera. By R. Ruaares Gates, Ph.D., F.L.S. vo, 
pp. xiv. 353, 114 text-figs. Macmillan, 1915. Price 10s. 
investigations were carried out in America, the original home o 
the genus, but latterly he has enjoyed the hospitality of the John 
i Gilbert wes experi- 
mental station at Rothamsted. He has published numerous 
papers on the mutations of Ginothera, but in the work now under 
