XCVl 
Agricultural Education : 
2. What do yon understand by permanent and temporary fertility 
of land ? What are the reasons that alluvial soils are generally very 
fertile ? 
3. Point out some of the peculiarities of land newly reclaimed from 
the sea and the treatment of land accidentally flooded by sea- water. 
4. Write a short paper on the assimilation of nitrogen by 
plants. 
5. State in general terms the composition of Peruvian guano and 
of nitrate of soda, compare their value and proper use in agri- 
culture. 
6. Good farmyard-manure on an average contains £ per cent, of 
nitrogen. How much nitrate of soda, or how much sulphate of 
ammonia, must you use to obtain the same quantity of nitrogen 
which is contained in 20 tons of farmyard-manure ? 
7. How can you detect the presence of arsenic, copper, and mer- 
cury in the stomach of an animal, suspected to have been poisoned 
by one or the other of these metallic poisons ? 
8. Mention the composition, preparation, and properties of carbolic 
acid. For what purposes may carbolic acid be usefully employed by 
agriculturists, and in what form ? 
9. Describe the chemical changes which have taken place in 
turning barley into malt. What is the composition of malt-dust and 
kiln-dust, and their value for feeding and manuring purposes, in com- 
parison with barley and malt ? 
EXAMINATION IN MECHANICS AND NATURAL 
PHILOSOPHY, 
Maximum Number of Marks, 200. Pass Number, 100. 
Thursday, April 25th, from 10 a.m. till 1 p.m. 
1. What is the centre of gravity of a body ? Why cannot a body 
have more than one centre of gravity '? 
2. When a body consists of two parts of known weights, and the 
position of the centre of gravity of each part is known, how can the 
centre of gravity of the whole bo found ? 
2. What is the construction for finding the resultant of two forces 
acting on a particle ? How is the construction extended to the case, 
of three or more forces? 
Draw O X, O y, two lines at right angles to each other, and 0 P a 
third line, making angles of 60" and 30' with O x and O y respectively ; 
forces of 7, 12, and 0 units respectively act on a particle at 0 along 
