214 
LONDON HORTICULTURAL SOCIETY. 
come a heavy hailstorm in the course of the day, I draw them up; 
a man in the space of twenty minutes will cover one hundred yards 
of wall; when the storm is over you may let them down, and your 
trees will be safe and perfectly dry. The framing for the canvass to 
act upon is made as follows, viz: let the above figure No. 19, a, 
b, c, d, represent the frame, and e,f, g, h, the canvass with a top and 
bottom rail. The top a, b, under the coping, and the bottom one 
c, d, sixteen inches from the wall on the piles drove into the ground 
level with the border, at four feet distance, and two feet into the 
ground for the bottom rail to rest upon. The top and bottom railing 
must be put together by mortise and tenon, the upright ones to be 
mortised into the top and bottom ones; then being put up under the 
coping and drove tight on the piles at the bottom to keep firm. The 
said canvass has lasted twenty-five years, used yearly, and will pro¬ 
bably last many more. When the danger of frost is over, I dry the 
said canvass and roll it up and lay it in a dry place till wanted again. 
The framing is taking down, laid away to keep dry; if the framing 
were made of memel timber it would last one hundred years; mine 
is only made of common spruce fir, and is as good as it was that day 
it was made. The canvass is laced to rails e , f, and li, g, made of 
foreign white wood, three inches broad, and one inch and a quarter 
thick, third off to half an inch, on both sides. Then some small 
holes are put through the broad way, about four inches asunder, to 
which the said canvass must be laced with strong threefold twine, the 
same as mariners use to lace their sales. 
i, To keep canvass from the ground. k, Piles drove into ground. 
Hesleyside, March 15, 1834. 
ARTICLE IX. 
LONDON HORTICULTURAL SOCIETY. 
Since our last report, papers have been read containing accounts of 
experiments made in the garden of the society, with a view to ascer¬ 
tain the relative productiveness of the tubers and sets of potatoes, by 
Dr. Lindley, and hints concerning the culture of melon plants (par¬ 
ticularly those of the housainee varieties of the persian families) as 
aquatic or amphibious plants, by the author of the Domestic Gar¬ 
dener’s Manual. The details of the first paper were very much in 
favour of planting potatoes in sets, that method, in the present course 
of experiments, having had the advantage very considerably over 
planting tubers in an entire state. 
