Ixxxii Agricultural Education — Examination Papers, 1871. 
3. Upon what soils and for what crops are potash-manures likely to 
be useful ? 
4. How do you determine tLe amount of potash in kainite or crude 
potash-salts ? 
5. Mention the conditions as regards soil, manures, and climate 
favourable or unfavovrable to the production of a large percentage of 
sugar in beet-roots. 
6. How do you distinguish cane-sugar from grape-sugar ; and how 
do you determine the amount of crystailizable sugar in beet-roots ? 
7. What is the composition of beet-root pulp and its nutritive value 
in comparison with ordinary mangold- wm-zel ? 
8. What is the composition of raw and of boiled bones, and how do 
you ascertain whether bone-dust is genuine or adulterated ? 
9. Explain the chemical functions of the leaves of plants. 
EXAMINATION IN MECHANICS AND NATUEAL 
PHILOSOPHY. 
Maximum Nxjmbek of Marks 200. Pass Number ICQ. 
Thursday, April 20th, from 10 a.m. till 1 p.m. 
1. State the meaning of the terms mass, density, specific gravity, force, 
accelerative efect of force. When the accelerative eifect of gravity 
near the earth's surface is stated to be 32'2, what units are used ? 
2. When a cart is drawn along a horizontal road what resistances 
have to be overcome ? Why can a horse draw a greater weight on a 
tramway than on an ordinary macadamized road ? 
3. State the conditions which a good balance ought to satisfy. 
What is meant by the sensitiveness of a balance ? What points in the 
arrangement of a balance must be attended to in order to render it 
sensitive ? 
4. A bottle when empty weighs 1000 grains, when full of water 
2015 grains, when full of spirit 1873 grains. What is the specific 
gravity of the spiiit ? Explain how a correction is applied for the 
weight of the air displaced when it is required to make an accurate 
determiaation of specific gravity by means of the bottle. 
6. State the conditions that must be fulfilled when a body is in 
equilibrium in still water. 
State also the condition that the equilibrium be stable. 
5. A body containing 50 lbs. of matter is acted on by a constant 
force. It is observed to move from rest, and in five seconds to describe 
a distance of 80-5 feet. Determine the magnitude of the force. How 
many pounds of matter would the force just support at a place where 
the accelerative effect of gravity is 32-2 ? 
7. What is meant by the " dew point " ? A room in a house has 
been kept without a fire through a long frost ; if a sudden thaw comes 
