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Group (b). PHYSIOLOGY. Subject V.

Examiner-S. B. MITRA, Esq., B.Sc., M.B.

Write an essay on the functions, and the circulation of the blood. Write an essay on the utility of the nervous system to an organization like man.

2.

Group (b). BOTANY. Subject VI.

Examiner A. HOWARD, ESQ., M.A., A.R.C.S., F.C.S., F.L.S.

1. Write a short essay on the influence of climate on vegetation. 2. Compare the advantages and disadvantages of an artificial system of classification like that of Linnaeus with those of the natural system.

Group (b). ZOOLOGY. Subject VII.

Examiner CAPT. A. C. MACGILCHRIST, I.M.S.

1. Discuss the distinctive characters and the geographical distribution of the order Marsupialia.

2.

Write an essay showing how you would distinguish the skelet ›n of an Anthropoid Ape (Orang-ntan) from that of man.

Group (b). GEOLOGY. Subject VIII.

Examiner-T. H. HOLLAND, Esq., F.R.S., F.G.S., A.R.C.S.

1. Write an essay indicating the principles on which a chronological scale for stratified sediments has been established and sub-divided Your essay should contain precise references to examples showing the way in which fossiliferous strata in India have been correlated with the standard stratigraphical scale of Europe.

2. Describe a typical volcano, and the leading phenomena of volcanic action.

1.

Group (b). MINERALOGY. Subject IX.

Examiner-T. H. HOLLAND, Esq., F.R.S., F.G.S., A.R.C.S.

Give an account of the mode of occurrence of Alumina amongst mineral substances.

2. Indicate the principles governing the classification of crystals.

Group (b). OPTIONAL MATHEMATICS. Subject X.

Examiner-C. LITTLE, ESQ., M.A.

1. Write a short essay on Solar Eclipses.

2 Write a short essay on the phenomena of the harvest moon.

PHYSICS.

FIRST PASS PAPER.

Examiner A. MACDONELL, Esq. M.A.

The figures in the margin indicate full marks.

1. If Boyle's law were true for all pressures the product pv would be constant for the same temperature. How does it really change with the pressure ?

2. Distinguish between transverse and longitudinal vibrations. examples. Describe how a sound wave is propagated in air.

Give

3. State the laws of the transverse vibrations of a stretched string. You are required to raise the pitch of a string from D to E, i.e., to increase the vibration in a given time in the ratio of 10 to 9. How could this be done?

4 What do you mean by saturated vapour? A barometer stands at 76 cm. A little water is allowed to pass up the tube. Supposing there is enough water to saturate the space above the mercury, what will be the readings of the barometer at 37°, 43°, 68°, 84° C. respectively? The pressure of saturated vapour is given by the curve.

5. How is the specific heat of a body found by the method of mixtures ?

The following figures were found in the determination of the specific heat of a metal. Calculate the specific heat.

105.67 gms.

35.68

6. Find the formula which connects the distances of object and image from a thin lens.

A convex lens, of 4 inches focal length, is used to project the image of a candle flame on a screen. Where must the candle and screen be placed with reference to the lens that the image may be ten times as long as the flame?

7. What is the use of a lit and of a collimating lens in a spectroscope?

8. Define magnetic declination. Describe in a general way how the 2, declination differs at different places of the earth's surface. proximately its value near Calcutta?

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What is ap

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9. Describe Faraday's 'ice-pail experiment and state the conclusions to be drawn from it.

10.

You are given a sensitive galvanometer and a battery whose current is too strong to be sent through the galvanometer without injuring it. What addition to the galvanometer would you require in order to measure the, current ?

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Find the total resistance between the points A and B in the circuit drawn.

Each number means the resistance in ohms of the corresponding part of the circuit.

11. Give some account of Kathode rays.

NOTE.-Marks will be given for neatness in drawing figures; and no marks will be given for any numerical example which is not fully worked out.

PHYSICS.

SECOND PASS PAPER.

PRACTICAL PHYSICS.

Examiner A. MACDONELL, ESQ., M.A.

Candidates were required to perform three experiments taken from the prescribed course.

PHYSICS.

FIRST HONOUR PAPER.

Examiner A. MACDONELL, Esq., M.A.

The figures in the margin indicate full marks.

1. What is meant by diffusion of gases? Give an account of experi ments on the subject, and state what results have been obtained.

2. Define Young's Modulus, limits of elasticity, elastic fatigue. What weight must be hung on an iron wire, 22 in diameter, to stretch it 1/1000 part of its length ? Young's Modulus for iron = 13000 tons per square inch.

3. What reason is there for believing that there is a tension at the free surface of liquids? Give an account of phenomena which could be explained on this supposition.

4.

Musical notes differ in intensity, pitch, and quality. What are the corresponding differences in the vibrations which produce the notes ? 5. Describe the formation of nodes and loops. What is the state of the air at a node and at a loop in a sounding pipe?

6.

How is liquid air produced?

7. The temperature at which a solution solidifies is lower than that of the pure solvent. Discuss this statement.

8. The coefficient of cubical expansion of glass is 254 × 10", and of mercury 182 × 10-6. What does this mean, and how is the first number

determined ?

What fractional part of glass bulb must be filled with mercury so that the volume of the part not occupied by mercury shall remain unchanged when the temperature alters ?

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9. Show how to find the weight of a given volume of moist air.

A closed glass globe whose volume is 500 c.c. is weighed in moist air when the barometer stands at 750 mm and the temperature is 27°C. Find the loss in weight, given that the weight of 1 litre of dry air at 0° and 760 m. is 1.3 grammes, that the specific gravity of aqueous vapour is §, and that the pressure of aqueous vapour at 27°C -26.5 mm.

10. Describe a method showing and measuring the power gases have of absorbing radiant energy, and give a short account of the results obtained.

1. A is the centre of a concave mirror, Cits centre of curvature. The successive figures on both sides of the mirror are at a distance from each other equal to half the radius of curvature, and the distances between successive figures are supposed to be further divided. Prove that if an object be placed at any position, say -4, (a) its image will be at the point indicated by inverting the figure, i.e. at 1, (b) the magnification will be- [NOTE-A minus sign attached to the fraction indicating the magnification means that the image is inverted.]

2. Describe a method of projecting on a screen a magnified image of a picture.

3. Define deviation and dispersion. In a telescope deviation is required but not dispersion, in a direct vision spectroscope dispersion but not deviation. How is this effected?

4. What is meant by the interference of light? Describe the method of producing interference bands either by a biprism or by Fresnel's mirrors. 5. Find the total action of a bar magnet on a small magnet (a) when 'broadside on', (b) when 'end on'.

6. Define potential, equipotential surface, and lines of force. How do the lines of force lie with reference to the equipotential surfaces? An uncharged insulated conductor is brought near a positively charged body. One end becomes charged with negative and the other with positive electricity, but the potential is the same all over the surface. Explain this.

7. A conductor moves with given velocity in a uniform magnetic field. What is the E.M F. induced?

A Faraday disk whose diameter is 30 cm. turns at the rate of 3000 revolutions per minute in a field whose strength is 4000 lines per square

centimetre and whose direction is perpendicular to the disk. Find in volts the E.M.F. generated.

8. Define specific resistauce.

The specific resistauce of copper and aluminium are approximately in the ratio of 15 to 29. The specific gravity of copper is 893, of aluminium 2.65. Show that for equal conductivity the weight of aluminium required is about half that of copper.

9. A vertical wire carries a current. What is the nature of the magnetic field near it? If another parallel wire is brought near it, what is the change in the field when the current in it is (a) in the same direction, (b) in the opposite direction, to that in the first?

10. Why is it economical to transmit electric energy at a high poten tial? Describe in a general way the arrangements made for transmitting energy electrically to a considerable distance.

PHYSICS.

THIRD HONOUR PAPER.

PRACTICAL PHYSICS.

Examiner A. MACDONELL, Esq., M.A.

Three of the following experiments had to be made :

1. Verify Boyle's Law and plot your results.

Paper set by-W. TATE, Esq., A.R.C.S., F.C.S.

Examiner-J. A. CUNNINGHAM, ESQ., B.A., A.R.C.Sc.T.

The figures in the margin indicate full marks.

1. If a quantity of water be saturated with air and the dissolved air be subsequently extracted from the water, it is found on analysis to contain a greater percentage of oxygen than the original air. What expl nation can be given of this phenomenon? Describe a method suitable for the analysis of the extracted air.

2. Outline the methods by which you could prepare:-(a) barium chloride from barytes, (b) crystalline copper sulphate from metallic copper, (c) arsenious oxide from any mineral arsenide. Give equations.

3. Give a detailed account of the use of nitrogen compounds in the manufacture of sulphuric acid, showing especially the reactions in which

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