Proceedings 83 
Though many of the Bozrytis forms may belong to the 
same morphological species and are quite indistinguish- 
able in size and appearance, they may not be able to attack 
the same host. They become biological species and grow 
on only one genus or species of the higher plants. This 
selective parasitism has been proved for a number of fungi 
and makes the work of extermination much easier for the 
cultivator. 
The conditions most favourable to fungoid attacks are cold 
and wet seasons, with little sunlight and deficient trans- 
piration. ‘he plant cells are then turgid with moisture 
and their walls soft and flaccid. ‘The fungus spores are 
seemingly always at hand, ready to take advantage of these 
conditions. We cannot control the atmosphere, but we 
can see that the soil is well drained and healthy, and that 
the plants are well nourished and as far as possible disease 
proof. The unnatural condition of crowding individuals 
in too close proximity, as in a potatoe field or an orchard, 
must be counter-balanced by protective measures in the 
choice of stocks, and by all the advantages that can be 
afforded by good sanitation. The cultivator will always 
find that “prevention is better than cure.” 
MEETING held at Redhill, Nov. 24th, rgo5. 
, Present— 31. 
An instructive lecture on ‘Weather Forecasting,” was 
then given by Mr. Wm. Marriott, Assistant Secretary of the 
Royal Meteorological Society. 
The lecturer explained how the various instruments are 
used at the numerous stations at which observations are 
taken ; how isothermal and isobaric charts are constructed ; 
and how the “forecasts” are made up from the different 
data obtained. Excellent lantern slides of cloud forms, 
snow crystals, meteorological apparatus, charts, &c., were 
shown. One of the wettest places in England, Sty Head 
Pass, in the neighbourhood of Seathwaite, Cumberland, 
has an average annual rainfall of about 175 inches, Lon- 
don having only about twenty-four inches. An instructive 
discussion took place at the close of the lecture, 
