393 
YORKSHIRE NATURALISTS * UNION: 
ANNUAL MEETING OF BOTANICAL SECTION. 
The Annual Meeting of this Section was held in the Leeds University on 
Saturday afternoon and evening, October 7th. Professor J . H. Priestley, 
President of the Section, being in the chair. There was a good attendance. 
Apologies for absence were sent on behalf of the Chairmen of the 
Plant Galls Committee, and of the Bryological Committee. Very feeling 
reference was made to the latter, Mr. William Ingham, B.A., who, it 
was announced, is seriously ill and unable to continue to act upon the 
committee with which he has been so long and honourably associated. 
The report of the joint secretaries was read by Mr. J . Fraser Robinson, 
and showed that again, from all parts of Yorkshire, reports of the year’s 
flowering and fruiting, new plant records and botanical work generally 
had been forthcoming, and were very encouraging. Workers in the 
field at Leeds, Bradford, Halifax, Sedbergh, Scarborough and Hull had 
given great facility to the Secretaries in making the general report by 
the fulness and exactitude of their individual efforts in this respect. In 
the discussion which preceded the adoption of the report, interesting 
observations on the luxuriance of the foliage and fruitage in successive 
seasons were made by Prof. Priestley, whilst Mr. A. A. Dallman called 
attention to the tendency to redness last Spring of the usually white 
Hawthorn blossoms. This, it was pointed out, was probably due to an 
excess of sugar in the sap of the hawthorn trees, after the long and fine 
summer of 1921 . 
Dr. W. H. Pearsall reported briefly for the Botanical Survey Commit- 
tee, and referred to accounts of work done at Field Meetings', and already 
published in The Naturalist. 
The Bryological report was read by Mr. W. H. Burrell, the great points 
of interest therein being the record for Mid-West Yorks. (V.C. 65) of the 
mosses, Moerckia Flotowiana, and an apparently ‘ galled ’ form of 
Aulacomnium palustre, which is not at all a usual phenomenon amongst 
mosses . 
Mr. A. A. Dallman reported the discovery in Britain of a gall of the 
type of ‘ Witch’s Broom ’ on the Willow ; and showed two or th^ee 
specimens to the meeting. 
The officers of the Section for the coming year were nominated en bloc, 
as were also those of the committees, with the exception of the Chairman 
and Convener of the Bryological Committee, vacated by Mr. Ingham. 
Mr. W. H. Burrell was voted to the chair, and Mr. F. E. Milson to the 
convenership . 
At this stage the meeting adjourned to afternoon tea, which had been 
very kindly prepared by Mrs. Priestley and other ladies, who were heartily 
thanked for their kind offices. 
Dr. Pearsall read a paper on ‘ Plant Distribution and Basic Ratios,’ 
having special reference to twelve or thirteen of the English lakes (Cum- 
brian), from which the lecturer showed some remarkable forms or varieties 
of Potamogeton perfoliatus which he had gathered, dried and mounted. 
Mr. Roger Butcher, who first discovered Tillaea aquatica in Britain, 
gave an account, very fully illustrated by actual specimens, of aliens, 
fast vanishing or extinct plants, and recent additions to the flora of 
Yorkshire. 
As some doubts had been raised as to the exact vice -county in 
which Mr. Burrell had made the ‘ finds ’ above referred to, he read notes 
on the exact boundary which should be accepted for the division of Vice 
County 65 from Vice County 64. 
The meeting concluded with a paper from Prof. Priestley, who ex- 
plained his work on the Physiological Anatomy of certain plants, an ac- 
count of which has already appeared in The Naturalist. 
1 922 Dec. 1 
