BIOLOGY.-PART III. (INCLUDING
EMBRYOLOGY.)

SECOND PAPER.

The Board of Examiners.

1. Describe carefully the development and adult structure of the central nervous system of the Frog, and compare the brain with that of (1) Lepidosteus; and (2) Hatteria.

2. Name and give the characters of the main divisions of the Ratitæ, and state briefly the past and present distribution of the forms included in this group.

3. Trace the development of the ovum in a bird up to the time at which it enters the oviduct.

4. Describe the development of the heart and of the main arterial vessels in the fowl.

5. Describe the chief modifications in structure of the vertebral column within the limits of the classes Amphibia and Aves.

6. Describe the important characters and distribution in time of-(1) Plesiosauria; (2) Ichthyosauria; (3) Deinosauria; pointing out their relationships to other forms.

Only Five questions to be answered.

BIOLOGY.—Part III.

THIRD PAPER.

The Board of Examiners.

1. Give some account of the distribution of the reefbuilding corals.

2. Write a short essay on the causes of Glacial epochs. 3. Write a short essay on the part played by larval forms in the dispersal of species.

4. Give some account of the geology of the Azores. How do you explain the peculiarities of its fauna?

5. Write a short account of the Ethiopian region, its extent, subdivisions, and characteristic inhabitants.

6. State what you know of the distribution of the following:-Deltocyathus, Didelphyida, Eupectella, Simia, Minyas, Liponema, Edentata, Pyrosoma, Sagitta, Elephas.

Only Five questions to be answered.

BIOLOGY.-PART III.

(LABORATORY WORK.)

FIRST PAPER.

The Board of Examiners.

1. Indentify and describe the specimens labelled A and B.

2. Dissect the specimen labelled C so as to show its heart and arterial system.

3. Indentify and briefly describe the specimens labelled D and E.

BIOLOGY.-PART III.

(LABORATORY WORK.)

SECOND PAPER.

The Board of Examiners.

1. Identify and briefly describe the specimens labelled A, B, C, D, E, F, and G.

2. Identify and dissect the specimen labelled H so as to show its reproductive system. Sketch and briefly describe your preparation.

3. Identify and briefly describe the specimens labelled K, L, and M.

CHEMISTRY, PART I.-PASS AND FIRST HONOUR PAPER.

The Board of Examiners.

N.B.-Candidates are instructed to give equations for chemical changes and to supplement these equations verbally, e.g. as to the conditions under which the change occurs, the characters of the products, &c. 1. 9.2 grammes of a certain substance in the state of vapour are found to occupy the same volume as 0.4 gramme of hydrogen at the same temperature and pressure. What is its approximate molecular weight? Explain fully how you arrive at your result.

2. What volume of chlorine at 12° C. and 750 mm. of mercury pressure can be obtained from 100 grammes of salt? Show the full working of

your answer.

3. Give an account of the changes which the following substances undergo when heated:-(1) potassium nitrate, (2) lead nitrate, (3) ammonium nitrate, (4) ammonium nitrite, (5) nitrogen tetroxide.

4. Give the formula and a short description of the preparation and properties of each of the following compounds: (1) barium carbonate, (2) aluminium hydroxide, (3) stannous sulphide, (4) lead iodide, (5) bismuth oxychloride.

5. Explain and exemplify the action of each of the following as a reducing agent:-(1) "nascent" hydrogen, (2) hydrogen iodide, (3) hydrogen sulphide, (4) sulphur dioxide, (5) alcohol.

6. How is oxalic acid prepared? Give an account of its chief properties and reactions; and contrast it with acetic acid.

7. How is chloroform manufactured? Explain its relations to (1) methane, (2) formic acid, (3) chloral.

CHEMISTRY, PART I: LABORATORY WORK.

PASS AND HONOURS.

The Board of Examiners.

Analyse qualitatively each of the substances marked respectively A, B, C, and submit a full written report of your experiments and results.

N.B.-No credit will be given for correct results unless supported by full and satisfactory evidence of the work done.

CHEMISTRY, PART III.

The Board of Examiners.

1. A substance is found, by analysis, to have the empirical formula CHO, with the molecular weight 58. It is required to ascertain its constitution by chemical methods. How would you proceed?