EXTRACTS TROM PllOCEEDINGS. 
Ixix 
of the pipe and the cold returning along the lower surface. Two 
currents in opposite directions were created in the pipe, and the 
action was so perfect that I ordered a frame to be fitted up forth- 
with, which has been in operation ever since. 
" The mode of heating by a single pipe may be, no doubt, of 
frequent use ; and manifestly, from the simple and portable nature 
of the apparatus, the arrangement will commend itself to the at- 
tention of horticulturists. 
• " But engineers whom I have consulted considered that the 
plan could not possibly answer ; but having occasion to write to 
the eminent hydraulic engineer Mr. E. Easton, I put in a post- 
script, ' Can you circulate water in a single pipe ? I can.' He 
replied that by accident a single pipe had once been arranged by 
one of his pupils instead of two; and this, to his surprise, was 
found to answer. And having my arrangement explained to him, 
he stated that there were many cases in which he should adopt it. 
" With this exception, every practical engineer has considered 
the plan impossible ; nevertheless it is most easy of construction 
and perfect in action, and I commend it strongly to my brother 
horticulturists in all cases where a single pipe is sufficient to 
communicate the necessary heat." 
See above the remarks under the head Scientific Committee, 
April 19. 
AZALEA AND AUEICULA SHOW. 
In consequence of the bad condition of the weather, the Show 
was comparatively poor, and there was little competition. 
Messrs. Lane had the Eirst Prize in the nurserymen's class for 
nine, also for six. In the corresponding class for amateurs the 
Second Prize was given to Mr. G. Wheeler, gardener to Sir E. 
H. Goldsmid, Bart. Messrs. Lane had the best single specimen 
for President Humann, and also for twelve cut trusses, the 
second-prize lot being sent by Messrs. Standish, and the third by 
J. Woodward, gardener to Mrs. Torr. Mr. Gr. Wheeler had the 
second prize for hardy spring plants. Eor Auriculas (six distinct 
varieties) the E.ev. H. H. Dombrain was first, H. Little, Esq., 
second, and Mr. James third. Mr. Turner had the best single 
self, Bessy Bell, Mr. James being second with Miss Smith, and the 
Eev. H. H. Dombrain with Campbell's Pizarro. In green-edged, 
Mr. James was first with Lovely Ann, Mr. Turner second with 
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