562 Miscellaneous Implements Exhibited at Chester. 
and penetrates far enough to form contact with the mercury at 
the temperature it is desired to maintain. The other end of 
this wire is connected with a small battery and magnet; the latter 
(when the circuit is complete by reason of the mercury touching 
the platinum wire) draws down one end of a beam and lifts the 
damper at the other, which allows the heat from the lamp to 
escape into the outer air. This seems a more simple and reliable 
system of regulation than any of its predecessors. The battery 
only requires recharging at long intervals, and the cost of this 
is small. 
An ingenious laying box was shown on this stand. It is 
intended to baffle misguided hens who only lay eggs for their 
own eating. The nest-egg is fastened on to a slightly inclined 
plane which forms the bottom. A false back leaves enough space 
for an egg to roll underneath, and behind it, into a division pro- 
vided for the purpose, and here the new-laid egg finds a sanctuary: 
Article 2285. The “ Westmeria” Co., Leighton Buzzard, 
Beds. Storm Proof Lamp, price 5s. — This lamp has much to 
recommend it. The external part consists of about 8 strips of 
ordinary window-glass, which slip easily into the tin framework. 
These are readily renewed when broken ; there is no chimney to 
break. The lamp itself burns petroleum with a jf-incli wick, and 
the burner spreads a flame 1 inch wide, consuming very little oil. 
By swinging it round rapidly at arm’s length it is impossible 
to put it out, and probably it might be swung at the end of 
a rope with equal impunity. The value of such a lamp as 
this is recalled by experience of stormy nights on the coast of 
Northumberland, when “looking round” to see what damage 
was done, stacks blown over, &c. This was often a difficult 
matter in the dark, for it involved scrambling over the gates 
when the wind was too strong to allow of their being opened. 
Article 2526. Straiosons, Ltd., 77, Queen Victoria Street, 
London, E.C. Potato Sprayer, price 20Z. — ' This machine (fig. 8) 
is capable of distributing fungicide on seven rows of potatoes at 
once, and can be adjusted to suit any width of drill up to 30 
inches, making a total width of 17^ feet over all. A light frame- 
work in rear of the barrel carries the horizontal tube which 
supplies the hanging spraying nozzles, and these are capable of 
either vertical or lateral adjustment. 
Article 2577. Last Yorkshire Cart and Waggon Co., Ltd., 
Beverley, Yorks. Manure and Turnip Drill, price 25?. — This 
drill is specially constructed to deal with damp artificials. At 
the bottom of the manure hopper is placed the reciprocating 
feeding slide, to which a slow motion is given ; this feeder puts 
the manure in contact with the distributor and keepsdt constantly 
