AgricuUural Education — Examination Papers, 1873. Ixxxix 
3. What is tho relation between the power and the weight in the 
screw press, on the supposition that there is no friction between its 
parts ? A screw makes one turn to tho inch, and is worked by an arm 
4 feet long : what force at the end of the arm would, upon the above 
supposition, compress the substance within the press with a force of 
3 tons ? 
4. An agent lifts G tons through a height of 77 feet in 0'75 of a 
minute : What is its horse-power ? What Ls meant when it is said 
that an agent works with 1 horse-power ? 
5. A body moving at the rate of 1200 ft. a minute is brought to rest 
by a constant force in 5 seconds : how far did the body move during 
each of those 5 seconds successively ? 
6. A cup weighs 6 oz., when full of water it weighs 15 oz., when 
full of spirit it weighs 13^ oz. : what is the specific gravity of the 
spirit ? Why would this determination be inexact ? Describe briefly 
an instrument by which the same principle can be made to give an 
exact determination. 
7. Describe briefly the cupped leather collar and its use in a 
hydraulic press. 
8. State the relation between the pressure and temperature of a 
given volume of air. A quantity of air at a temperature of 32° Fahr., 
and imder a pressure of 30 inches of mercury, is inclosed in an air- 
tight vessel : by how many degrees must the temperature be raised in 
order that its pressure against the sides of the vessel may equal that 
of 35 inches of mercury. 
9. Explain the principle and use of a fly-wheel in an ordinary 
steam-engine. 
EXAMINATION IN MENSUE ATION AND LAND- 
SUEVEYING. 
Maximum Number of Maeks, 100, Pass Number, 50. 
Thursday, April 24.th,from 2 p.m. till 5 p.m. 
1. What is the number of feet in a chain, and of square chains and* 
square yards in an acre ? A square piece of grormd contains 30 acres ; 
how many yards and how many chains are there in one side of it ? 
2. If cabbages were planted 16 in. apart in all directions, how many 
would there be in a square field of 10 acres ? How many would there 
be if they were planted 16 in. apart in the rows, and the rows 16 in. 
apart ? 
3. Explain how you would divide a triangular field into two equal 
parts, by means of a straight line drawn through a given point on one 
side. 
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