Agricultural Education — Examination Papers, 1875. Ixxxiii 
7. Give the chemical composition of urea, explain its relation to 
ammonia, and how it may be made to yield the latter substance. 
8. Explain the chemical nature of wood, and the products to which 
it gives rise when heated (1) with, (2) without, access of air. 
9. What are the conditions recjuisite for the alcoholic fermentation 
of sugar? Explain the chemical changfes which occm- during such 
fermentation. 
II. Agkicultueal Chemistrt. 
Wednesday, April lith, from 2 p.m. till 5 p.m. 
1. From what som-ces and in what forms do plants take up nitrogen ? 
2. Give a list of nitrogenous manures, state theii' composition, com- 
parative efficacy, and commercial value. 
3. In what combinations occur the following elements in soils, and 
in what forms are they assimilated by plants : — P. S. K. Si. Ca. Mg. ? 
4. Point out the difference in the composition and feeding value of 
sugar-beets and common mangolds. Is it more profitable to the 
British farmer to sell sugar-beets at £1 a ton, or to consume them on 
the farm ? Give reasons. 
5. What are the properties and composition of pure and inferior 
linseed-cakes ? State adulterations in linseed-cakes and the means of 
detecting them. 
6. What is the composition and relative feeding and manuring 
value of decorticated and undecorticated cotion-cake ? Mention some 
precautions which should be taken in feeding cattle upon cotton-cake, 
7. Write a short paper on improving permanent pasture by means 
of suitable manures. 
8. Explain the action of the following substances as disinfectants : — ■ 
Lime, chloride of lime, charcoal, chloride of zinc, sulphurous acid, 
cai'bolic acid, permanganate of Potash. 
9. What are the chemical characters of drainage waters from in- 
fertile soils and from highly manui'ed land ? 
EXAMINATION IN AGEICULTUEE. 
Maxdium Number of Marks, 200. Pass Number, 100. 
Thursday, April 15th, from 10 a.m. till 1p.m. 
1. State the chief conditions to be set forth in an agreement for a 
yearly tenancy of 300 acres of friable loam, one-third pasture, with 
entry at Michaelmas. 
2. On a farm of 300 acres, one-third pastui-e, and carrying a 
