NATURAL AND PHYSICAL SCIENCE (D). BOTANY. SIXTH PAPER. PRACTICAL. The figures in the margin indicate full marks. [The use of Roxburgh's " Flora Indica" and of Prain's " Bengal Plants" is permitted.] 1. Identify the dried specimen O. (Canscora diffusa, Roem. and 16 Schultes). 2. Describe in detail the specimen P, and identify it as far as possible. (Croton sparsiflorum.) 16 Demonstrate their ordinal 16 20 3. Identify the specimens Q, R, S and T. and generic characters, and draw floral diagrams. (Digera arvensis, Forsk.; Andropogon halepensis, Brot.; Ammannia baccifera, Linn.; Ani- 16 someles ovata, R. Br.) 16 NATURAL AND PHYSICAL SCIENCE (F.) GEOLOGY. T. H. HOLLAND, ESQ., F. R.S., F.G.S., A.R.C.S. Papers set by P. N. BOSE, ESQ., B.Sc., F.G.S. Examiners T. H. HOLLAND, ESQ., F.R.S., F.G.S., A.R.C.S. FIRST PAPER. GEOLOGY. 1. Write an essay on glaciers with special reference to their geological action and to the glacial deposits of India. 2. (a) Describe the different kinds of volcanic vents, noting the distinctive characters of eruption from each, and giving examples from Indian geology. (b) Discuss the causes of volcanic action. 4. 3. Describe the Tertiary System as developed in England and in India. Give a short account of the Transition Systems of India, noting the distribution and mode of occurrence of the minerals of economic importance which occur in them. NATURAL AND PHYSICAL SCIENCE. (F). GEOLOGY. SECOND PAPER. PALEONTOLOGY. The same value is attached to each question. 1. Write an essay on the Imperfection of the Palæontological record. Give the leading characters and range in time of the following: 2. (a) Graptolitidae, (b) Blastoidea, (c) Eurypterida, (d) Spiriferidae, (e) Aviculidae. 3. Discuss the Zoological affinities of (a) the Ichthyopterygia, (b) the Sauropterygia, and (c) the Archaeopteryx. Give the dentition and geological range of (a) the Felidae, (b) the Simiadae, and (c) the Proboscidea. 4. Give the principal characters and range in time of (a) the Conifers, (b) the Cycads, (c) the Calamites, (d) the Lepidodendroids, (e) the Sigillaroids. 1. Give a mineralogical account of the amphiboles, describing also 14 their modes of occurrence in Nature. 2. Describe the hydrous oxides of alumina and iron, including accounts of their economic uses. 12 3. Give a precise account of the structures frequently met with 12 amongst the acid plutonic rocks. 4. Describe the Indian occurrences of rock-salt and the minerals 12 found associated with it. 5 Classify and describe the minerals having the general formula 12 RO2. 6. Give an account of the rocks in which (a) sodalite and (b) anal- 14 cime are found. 7. Describe the chief forms of inclusions of foreign liquid and solid material in the crystals of igneous rocks. What evidence do they afford as to the conditions under which the rocks were formed ? 12 8. Give an account of the conditions under which the minerals 12 magnesite and talc occur in India. NATURAL AND PHYSICAL SCIENCE (F). FOURTH PAPER. CRYSTALLOGRAPHY AND INORGANIC CHEMISTRY. The figures in the margin indicate full marks. 1. Describe precisely by what micro-chemical methods you would 12 distinguish between nepheline and apatite in a rock-section. 2. Show that by their internal physical characters crystals can be grouped in a way which corresponds to the groups based on the classification of outward geometrical forms. 121 3. Give an account of the crystallographic characters of tourmaline, 12 epidote, and kyanite. 4. By precise reference to examples, give an account of the usual effects of hydration and show that in hydrated minerals water exists in different forms of combination. 5. How are the natural silicates classified ? 6. 22 12 22 12 Describe the relations between the optio axial plane, the percussion and pressure figures in the micas. 12 7. How are etching figures produced, and what evidence do they offer as to the crystalline structure of a mineral? 8. A rock composed of nepheline, magnetite, and a felspar undetermined, is found to have the following composition on chemical analysis: SiO2........... .47.62 ...17.68 ............ ....13.80 14 On treating with boiling hydrochloric acid, evaporating to dryness and treating the residue with acidulated hot water, it was found that 31.2 per cent. of the rock taken had passed into solution. The soluble portion was found to contain : Find the proportions by weight of the mineral constituents, and determine the nature of the felspar. (Composition of the nepheline: 3 Na2O, K2O, 4 Al2Og. 9 SiO2. Atomic weights: Si=28, Al=27, K=39, Na=23, () = 16). NATURAL AND PHYSICAL SCIENCE (F). GEOLOGY. FIFTH PAPER. PRACTICAL EXAMINATION IN MINERALOGY. The figures in the margin indicate full marks. 1. By what means would you demonstrate the relative refractive 14 indices of two colourless minerals in contact in a rock-section? In what way is this method of value in determining the species of a plagioclase felspar ? 2. Name the minerals A, B, C, giving their chemical compositions, 12 crystalline forms, and modes of occurrence in Nature. 3. Describe precisely how you would determine the optic axial angle 12 of a biaxial crystal. 4. Draw the forms represented by the models D, E, F; mark the faces in each form with Miller's indices, and name the minerals which crystallize in these forms. 12 5. Describe the rock-sections G and H. 12 6. Give a full account of the rocks represented by specimens J, K, L. 12 7. Make a blowpipe analysis of specimens M and N. 14 8. Determine the sign of double refraction in the minerals O and P. 12 1. Draw a section along the line A, B, in the accompanying map. 2. Identify the species I, II, III, IV, V, VI, VII, VIII, IX, X, and name the formation of which each is characteristic. 40 3. Describe the specimens 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, noting the zoological position and geological range of each. 20 4. Name the genera a, b, c, d, e, f, g, h, i, j, and give the geological 20 range of each. 222 20 |