20 Transactions British Mycological Society. 
During this period our knowledge of the life-history of many 
of our numerous fungal diseases, which attack fruit trees, 
bushes, cultivated crops and vegetables, has greatly increased. 
Hardly a day now passes but what some new species is added 
to the already long list of these pests. Various remedies are 
suggested for their suppression, amelioration, or avoidance. At 
the present time the planting of immune varieties and strains 
of fruit trees and vegetables, and the employment of protective 
washes to prevent infection seem to be most favoured. I think 
we may congratulate ourselves upon the fact that it was due 
to the strenuous efforts of two of our members, Prof. E. S. 
Salmon and Mr F. T. Brooks, that Government action was 
taken to suppress the Gooseberry Mildew, Sphaerotheca mors- 
uvae B. & C., and the Silver-leaf disease of our plum and other 
fruit trees attributed to Stereum purpureum (Pers.) Fr. 
With regard to the cytology of fungus reproduction I feel that 
this requires no comments from me as it was ably dealt with 
by Dr Harold Wager in his luminous Presidential address on 
“The significance of sex and nuclear fusions in the fungi’’ (see 
Trans. Brit. Myc. Soc. vi, 307) delivered to you only two years 
ago. Mr J. Ramsbottom has also kept our members well abreast 
with the most recent investigations on this subject by his 
voluminous, exhaustive and able summaries of the results ob- 
tained throughout the world (see Trans. Brit. Myc. Soc. II, 354; 
IV, 127, 249; V, 85, 271 and 441). 
I claim also that an immense advance has been made in the 
knowledge of our larger British fungi by the members attending 
our annual spring and autumn forays. Since the meeting at the 
Boat of Garten in September, 1900, complete lists of all the 
species gathered have been published, and each year increases 
the value of these as a reliable source upon which to base the 
data for the distribution of our fungi. 
Perhaps the most noteworthy forays that have been held 
may be considered to be those at Forres and Baslow. The 
former was held in conjunction with the Cryptogamic Society 
of Scotland from the 12th to the 19th of September, 1912, under 
the Presidentship of Miss Gulielma Lister. At this meeting 
seven hundred and twenty-six species of fungi and eighty-one 
species of mycetozoa were collected. It is not fair to compare 
this number with those collected at other autumn forays because 
a certain number of our members arrived at Forres several days 
before the meeting and their collections are included in this large 
total. It is clear however that the climatic conditions were very 
favourable to their growth, because in 1919 at the autumn foray 
held at Baslow from the 22nd to the 27th of September, under 
the Presidentship of Dr Harold Wager, only three hundred and 
