THE WATSON 
Botanical Exchange Club 
REPORT FOR 1922—23. 
List of Contributors. 
Sheets. 
Sheets. 
W. C. Barton ... 
... 331 
F. Rilstone 
... 72 
S. H. Bickham ... 
... 25 
Miss I. M. Roper 
... 166 
Preb. B. J. Burclon 
... 46 
C. E. Salmon ... 
... 30 
A. J. Crosfield ...^ 
... 21 
H. S. Thompson 
... 607 
Dr. H. Downes... 
... 165 
J. W. White ... 
... 175 
L. B. Hall 
... 57 
Nat. Mus. of Wales 
... 76 
J. E. Little 
... 832 
S. Lond. Bot. Inst. 
... 49 
St. J. Marriott ... 
... 33 
W. H. Pearsall... 
... 50 
Total 
...2735 
The gross number of sheets dealt with this year, reckoning in 
special contributions for individual members and public herbaria, 
exceeded that of last year by 1107, and was approximately equal 
to the number in 1913. Although no desiderata list was issued, 
the study of critical genera has been well kept in mind by 
members, though not altogether those genera that have been 
prominent in former years. The past season proved extremely 
good for the fruiting of most British trees, and they are very 
much better represented than usual. In drying branches as large 
as possible a weight of from 100 to 150 lbs. is not too much, and 
the pressure may with advantage be distributed by the inter- 
position of corrugated sheets, or of liberal wads of old newspaper 
frequently changed to obviate the danger of mould. If leaves 
crumple in drying it is a sign that the pressure has not been 
properly distributed. 
In addition to those sent to contributing members, and to the 
referees, parcels were sent to Kew, the British Museum, Oxford, 
Cambridge, Dublin, Nat. Mus. of Wales, Bergen, and Stockholm. 
Miss Chambers, Headmistress of the Girls’ Grammar School, 
Hitchin, again kindly lent a room for the distribution, and I have to 
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