ExMhU'ed at Windsor. 
500 
OAe and a half gallons of water were then put into the tank 
bf another machine, and the nozzles for distributing insecti- 
cides on ground crops wei'e put on. These delivered the spray 
so minutely divided that it was difficult to realise what was 
being done. Hardly anything could be seen except that a fog 
or cloud seemed to cover the ground, and on examination it was 
seen that each blade of grass or pebble was sprinkled over with 
the dew, like a Scotch mist, which, however, very quickly 
evaporated in the intense heat. It covered well and thorougldij 
a track 5 yards wide. This would extend over G rows of 
turnips 27 inches apart. The distance ti'avelled by the machine 
in distributing the \\ gallon of water was 665 yards 1 foot ; 
taking the width at 15 feet, this would be at the rate of 2-J 
gallons per acre. Supposing the machine travelled at the rate 
of 2\ to 3 miles per hour, it would cover from H to acres 
per hour. 
Another machine was then tried, having nozzles adapted for 
the distribution of insecticides in the air for hop gardens. 
The machine was tried upon some oak trees — it thoroughly 
soused branches and leaves, 16 feet high, so that they bent froni 
the force of the spray, for in this trial the water was delivered in 
perpendicular sprays, from both sides of the machine, in the 
same minutely divided condition ; but it was evident that it 
struck the leaves hard, and would thoroughly cover them with 
any similar liquid used. 
I will venture to say that the first idea of every farmer look- 
ing upon this machine for the first time would be to judge for 
himself if it was likely to accomplish what is claimed for it (and 
what it has in fact accomplished), viz., to combat successfully 
with what is called the " turnip fly," or flea beetle, one of the 
greatest joests that a farmer has, and which pays him an annual 
visit with great regularity. In 1786, Arthur Young stated that 
the turnip crop destroyed in Devonshire alone was valued at 
10,000L, and in early numbers of the Journal we read of various 
remedies which have been tried — the Paul net, in which were once 
caught a quart-bottleful of the beetles, who had been decoyed 
by some early sown turnips, and were thus cleared away before 
the main crop came ; a newly-painted board or sheet drawn 
over the turnips, which catches the beetles against it as they 
leap when disturbed ; fumigation, by burning stubble or 
weeds to windward of the field, so that the smoke may drive 
the beetles away ; drawing elder boughs over the small plants ; 
dressing the plants with an infusion of wormwood to render 
them bitter and unpalatable. Snuff, also, and smelling-salts 
are named, with many other equally potent concoctions, but all 
VOL. XXV. — S. S. L L 
