Ixxxviii Agricultural Education — Examination Papers, 1873. 
II. Ageicultueal Chemistkt. 
Wednesday, April 23rd, from 2 p.m. till 5 p.m. 
1. Wliat is tlie general composition of peaty soils? Mention the 
best means for reclaiming peat-bogs ? 
2. Describe the chemical changes which take place in paring and 
burning ? 
" 3. Describe the chemical and physical effects of ploughing and sub- 
soiling. Should all land be ploughed deep ? 
4. What do you understand by permanent fertility of the land ? Is 
it possible to increase the permanent fertility of soils ? 
5. Mention the constituents upon the presence of which the pro- 
ductive powers of soils mainly depend, and show in what way the 
continuous growth of grain-crops exhausts all soils more or less 
rapidly. 
6. Is it possible or advisable to grow wheat after wheat for a num- 
ber of years in succession without deterioration of the land ; under 
what circumstances and by what means may such a course of cropping 
be pursued, and under what circumstances should it not be attempted ? 
■ 7. What is the general composition of sewage manures, obtained by 
precipitating town-sewage with lime? State the agricultural and 
commercial value of such sewage manui'cs. 
8. A farmer requires nitrate of soda, mineral phosphate, dissolved 
bones, bone dust, and Peruvian guano. How should he proceed in 
order to procure these manures of the best quality at the lowest price ? 
9. What is the composition and agricultural and commercial value 
of gas-lime ; gas-water ; gas-tar ? How should gas-lime and gas- 
water be used in agricultui-e ? 
EXAMINATION IN MECHANICS AND NATURAL 
PHILOSOPHY. 
Maximum Numbee of Makks, 200. Pass Ntobee, 100. 
Thursday, April 2i.ih, from 10 a.m. till 1 p.m. 
1. What is meant when it is said that one body has twice the density 
of another body ? 
2. Forces of 3, 4, and 6 units act on a point, and keep it at rest ; 
show by a diagram exactly how they must be adjusted. Why could 
not forces of 9, 17, and 7 units balance each other under any circmn- 
stances ? 
