1872 . ] 
FRUIT CULTURE-JUNE. 
137 
as the sand has passed through in one direction. Some 20 years ago I presented 
one of these instruments for plumb-line and level work to the late Dr. Lindley, but 
as I had more important business on hand samples only were made, and thus the 
thing has slumbered for about 20 years. 
The principle was new in mechanics, as no one had ever used sand obeying 
the laws of gravitation for such a purpose, until I invented this pocket-level and 
plumb-line to meet the want which I have described. Extreme accuracy is not 
wanted, but quick action and little bulk or weight are of the greatest irnport- 
Forsyth’s Level and Plumb-Rule. 
ance; just as we look at a clock or a watch for the time of the day, and feel 
satisfied with an approximation, although our parish clock on the church, or our 
pocket five-guinea Geneva, does not always give us Greenwich time—even if it 
did, that would not be our time if east or west of London. The sand-line is 
extremely sensitive, and quite clear, forming a steady stream of uniform breadth ; 
and falling, as it does, between two lines marked on the front and back of the 
instrument, it resembles three hairs or threads all in a line, when the sides are 
upright and the top and bottom level. Its extreme simplicity is therefore one 
of its greatest merits.— Alexander Forsyth, Salford. 
FEUIT CULTUKE.—JUNE. 
Q\-PaLL trees should now be carefully attended to. Apricots, as stated last 
month, are a very thin crop in this neighbourhood. Peaches and Necta¬ 
rines are also a light crop : my statement last month that they were a 
good crop was premature; from the quantity of blossom on the trees, I 
expected the crop would be a good one, but much of the blossom, on the wood 
that was not properly ripened last season, was weak, and fell off without setting. 
On trees where the wood was well matured there is a fair crop of fruit. This 
