House and Garden 
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less roily and impure, it was necessary 
to have the inlet a considerable distance 
out in the lake. He purchased for the 
purpose a steel pipe of eight inches diam¬ 
eter, manufactured by the Spiral Weld 
Tube Company, at East Orange, N.J., 
using for couplings cast-iron flanges 
weighing, with bolts and gaskets, about 
sixty-five pounds to the pair. Plugging 
the end of the first length, he pushed it 
out on the surface of Lake Champlain 
and connected the second length, push¬ 
ing this out m turn until the whole line 
was coupled. It then presented the un¬ 
usual spectacle of a line of eight inch 
pressure pipe nearly i,ooo feet long, 
floating with a displacement of only 
three and one-half inches of its diam¬ 
eter. 
When the requisite length had been 
connected, the line was tow ed to position, 
the plug at the end removed, and the 
pipe sank easily in sixteen and one-half 
feet of w ater, without breaking a joint or 
receiving any injury. No buoys or 
floats were used in the operation, 
and no apparatus of any kind. The 
pipe is now in use as the suction of 
a steam-pump and gives perfect sat¬ 
isfaction. 
Work of this kind usually involves the 
use of expensive and troublesome flexible 
joints, and Mr. Peck’s ingenious expe¬ 
dient is worthy of record.— Invention. 
RAPIDITY OF GROWTH OF TREES 
T) EGINNING wdth a three-inch sap- 
^ ling the following named vari¬ 
eties of trees will in twenty years, under 
favorable conditions, attain a diameter 
approximately as follow^s: inches 
White or Silver, Maple. 2i 
American White Elm. 19 
Basswood. 17 
Red Maple. 16 
Yellow Locust. 14 
Box Elder. 14 
Hard Maple. 13 
Red Oak. 13 
Scarlet Oak. 13 
White Ash. 12 
White Oak. 11 
Hackberry. 10 
The height wdiich each species may 
be expected to attain is omitted here as 
it will assume the usual proportion to 
the diameter. (Report of the New 
York Eorestry Commission ).—Park and 
Cemetery. 
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