158 
Agricultural Education E.rhihition. 
phosphate derived respectively from a good sample of Basic 
Slag, the portion of the same slag insoluble in 2 per cent, 
citric acid, and the coarse material which would not pass a 
sieve with 100 meshes to the linear inch. The conclusions to 
be drawn, when the pots were compared with a pot to which 
no phosphate was added, were that only that part of the basic 
which is soluble in 2 per cent, citric acid, and is included in 
the fineness, is immediately available for the mustard plant 
under the conditions-of the experiment. 
The immediate effect of manures on pastures was shown by 
the differences in growth between five boxes of turf which had 
been removed from a poor pasture on May 6th, and variously 
manured with soluble plant foods. The box which was manured 
with a complete manure showed a great increase on the control, 
and though the clovers had not grown to the same extent as in 
the box from which nitrogen was omitted, the growth was a 
little greater in quantity. The box receiving complete manure, 
without potash, came next, while that without phosphates was 
little better than the “ no manure.” All the boxes received 
lime, and it was noticeable that this indirect manure did not 
produce the immediate results which were obtained with the 
soluble direct manures. 
The results obtained ivith the growth of Sugar-Beet in the 
Midlands during UH)6 were shown by means of diagrams, and it 
was seen that for that year the yield and composition of the 
beets compared favourably with beets grown in any other part 
of the woi’ld. Full details of these experiments are published 
in Bulletin 7, 1906-7, issued by the Midland Agricultural and 
Dairy College. 
Cultures of Bacteria were exhibited in cases, one of the most 
instructive of which showed the number of colonies formed by 
bacteria falling on a plate of gelatine in one minute. A plate 
exposed in a clean cow-byre grew thirty-six colonies, but after 
re-whitewashing only five colonies grew on another plate 
exposed for the same time. The number had only risen to 
twenty-two after eight days. It is highly significant that by 
whitewashing the cow-byre the number of organisms in the air 
could be reduced almost as low as the number occurring in the 
open field. A plate exposed in the open field grew four colonies. 
Micro-photographs of Bacteria and also of seed impurities in 
cakes were shown. 
Exhibits by Societies. 
Royal Agricultural Society of England. — The several scientific 
departments of the Society contributed largely to this section 
of the Show. The hooks, pamphlets, leaflets and diagrams 
published at different times by the Society were arranged in 
