ON TEACHING CHEMISTRY. 293 
determined. What are the grounds for regarding the atomic weizht of carbon to 
be 12 rather than 6 ? 
3. With what different elements, and under what circumstances, will nitrogen 
unite directly? Show how ammonia may easily be obtained from each of the 
compounds so formed, 
4, Describe the allotropic forms of phosphorus, and the circumstances under 
which they are formed. Show in whiat respects phosphorus resembles arsenic. 
5. Illustrate, by at least three examples involving different reactions, the oxi- 
dising action of nitric acid, explaining the chemistry of each case. 
6. Give an account of the chemical characters of iodine, hydriodic acid, and 
potassium iodide. How do you account for the reducing action of hydriodic acid 2 
7. 2632 grams of a salt, containing only potassium, chlorine, and oxygen, gave 
when heated 851-2 cc. of oxygen gas; and the residual potassium chloride treated 
with silver nitrate gave 2°72G6 grams of silver chloride: calculate a formula for the 
salt. 
8. Give an account of the chemical characters of lime. Compare them with 
those of the oxides of lead and magnesium. 
9. Explain how malleable iron is made from cast iron. 
10. Show that the chemical properties of the elements are connected with their 
atomic weights according to a definite law. : 
PRACTICAL CHEMISTRY. 
[N.B.—In answering these questions be particular to state every experiment made 
én the order in which it was made, and to specify the reagents used in making it, 
and the effects which you observe to follow. } 
1. Make a qualitative analysis of the substance A.} 
2. Examine with the blowpipe the substance B.1 
3. Find the acid in C.! 
4. Determine, by means of the standard solution of silver nitrate, the pro- 
portion of sodium chloride in the solution D.1 
INDIA FOREST SERVICE. 
The subjects of examination during recent years, and the marks assigned 
thereto, are detailed in the following table :— 
Maximum. Minimum. 
Arithmetic in allits branches. : : : 300 100 
Compound Addition . 2 ; 2 c c 50s - 
Orthography . . - A . . . 800 150 
Handwriting . - - : . c : 200 100 
Intelligence : : ; ‘ C ; ; 100 — 
English Composition . : : : . : 200 67 
Algebra, up to and including Binomial Theorem . 300 75 
Geometry, including Ist, 2nd, 3rd, 4th, and 6th 
Books of Euclid . A : : : é 300 75 
Plane Trigonometry . é : : S : 300 75 
Elements of Mechanics. Caria: cs Sainte 330 75 
Elements of Physics . . : 2 : : 3800 75 
Inorganic Chemistry . are : - ¢ 400 80 
_ Mechanical Drawing of Geometrical Figures. 400 80 
Translation from French . : . ~, 200 67 
French, oral. : - 5 - 4 : 100 33 
Elements of Botany . : tens - 400 80 
* These substances were as follows :— 
A. Litharge, B. Chrome-iron stone, 
_C. Sodium silicate, D. 5-005 grms. in four litres. 
