174 WHITWELL: WEST YORKSHIRE MOSSES. 
The University of Oxford, in 1881, expressed its appreciation 0 
Mr. Boswell’s attainments, and of his services in connection with 
own herbarium, by bestowing upon him the degree of honorary 
I fear that growing absorption in his subject, and ever-increasing. 
Property of the University. Barbula) 
The first letter I give has special reference to a Zortula (Ba 7 
from the bridge over the Lune above Sedbergh, which had Oa 
me, it seemed so much larger and stouter than Z. murals. Mr. ee 
Lees in the ‘Flora of West Yorkshire’ has assigned it to — 
( Lortula) rigidula. The Brach thecium rivulare mentioned was we ‘ 
near Stirton, and has found record in the ‘ Flora.’ The Salsa ' 
Sulsola Kalj Linn., the most curious ‘casual’ I have ever met 
0. ; 
DEAR S1R,—Your Tortula is Z. muralis, equally common on brick 
and equally common, I should say, in every county 
occur with fruit. It seems not to come down to the lowlands. I have 
it several times barren, and my fruiting specimens were sent 
Yorkshire ene : 
Yes! I remember the Sa/sola very well. Houses now cover the gr 
Druce. 
Y fi 
exotics a time ago, and I still reckon myself in his debt. 8 
There used to be some good mosses in Craven; look out for oo. 
moors, 
Yours very truly, H. Boswell 
Somewhat Surprised that the Zvrtula was held to be the 
only, I sent Mr. Boswell another sample, which o¢ 
following €pistle—thoroughly characteristic : 
the 
OXFORD, 5th May, 
MY DEAR S1k,—The second Zortu/a sent is the same aS ie Z 
Tespect it differs from ordinary muralis 1 cannot discern, and y' 
accustomed to think I know that plant for some years. 
