the present profile of the ground; the stratification is vertical and the beds are transverse to the line of the road.

Design a retaining wall which will enable the road to be made good, and draw a cross-section of it to a scale 2 feet to 1 inch, also give a diagram shewing the forces acting on the wall.

2. It is required to build a pier of masonry, 100 feet by 10 feet in plan, in the Yarra, in a site similar to that of Prince's Bridge; the depth of water is about 12 feet, and the bottom is rocky, full of

fissures and covered with boulders. Design a suitable coffer dam, and make drawings of it to scale 4 feet to 1 inch.

3. Draw half-longitudinal section, half elevation, and half plan, shewing arrangement of stringers, deck, and abutments of a timber road-bridge for country traffic-15 feet span, 20 feet roadway, and 15 feet above stream bed.

4TH YEAR B.C.E., NEW REGULATIONS.

CIVIL ENGINEERING.-PART II.

The Board of Examiners.

1. Draw a cross section to scale 4 feet to 1 inch of a town street 66 feet wide with 10 foot footpaths, shewing tar-paving, kerbing, channelling, and wood-paving throughout.

Draw up specifications for the earthwork in the formation of the street, the soil being volcanic with large boulders in places.

2. Prepare drawings for a subway for foot traffic, under a double line of railway, at a street crossing; the line approaches the station with surface foundation on a rising grade of 1 in 60, and is level across the street and at the station.

K

MECHANICAL ENGINEERING.

FIRST PAPER.

The Board of Examiners.

1. Make neat detailed sketches of a steam engine capable of developing 30 horse-power, with a boiler pressure of 80 Ïbs.

The following particulars will be required :— (a) General drawing of engine, giving elevation of cylinder, &c., cross-head, slide bars, connectingrod, crank, main shaft, fly-wheel, &c.; and show necessary fittings, such as lubricators, petcocks, &c.

(b) Plan of same.

(c) Section through cylinder and valve-chest, giving all necessary dimensions.

(d) All calculations necessary, indicator diagram expected, calculations showing how the size of various working parts are arrived at.

(e) Describe how you would test such an engine. (f) In supervising the construction of such an engine, what practical precautions would you adopt with regard to foundry work, patternmaking, fitting, &c.?

MECHANICAL ENGINEERING.

SECOND PAPER.

The Board of Examiners.

Not more than FIVE questions to be attempted.

1. Show how to draw the diagram of crank pin resistance, having given the indicator diagrams and the dimensions of the engine.

(a) Neglecting, (b) Considering the acceleration of the reciprocating parts.

2. Explain fully how you would proceed in order to determine the weight of the fly-wheel of a steam engine, having given the diameter of the flywheel and the fluctuation of speed permitted.

3. Make a diagram sketch of Joy's valve gear, and shew how to determine the driving effort from the known valve resistance. Compare the action of Joy's gear with Stephenson's link motion. in regard to the distribution of steam at various grades of expansion.

4. Investigate, by means of equations, the distribution of steam in a two-cylinder compound engine with cranks at right angles to each other, and draw the theoretical diagrams assuming all necessary data.

5. What are the four principal causes for the presence of water in the cylinders of a steam engine? Describe fully the various methods that have

been employed in order to diminish the losses resulting from the causes referred to, and illustrate your remarks by drawing indicator diagrams.

6. State approximately the relationship which exists between the grate area and heating surface in the locomotive, marine, and Lancashire boilers. State also, the proportion of heating surface to fuel burnt. Describe, by means of sketches, the construction of a modern marine boiler with three furnaces, showing water spaces, and method of staying flat surfaces. Give an index of the various parts, and enumerate all the principal fittings.

7. Describe, with sketches, the valve motion and method of igniting the mixture in the Otto engine as constructed by Crossley Bros. Why does the efficiency of this engine differ so slightly from the original Otto and Langen engine? Why has it taken the place of the latter?

4TH YEAR B.C.E., NEW REGULATIONS.

HYDRAULIC AND SANITARY ENGINEERING.

The Board of Examiners.

1. Design a line of pipes from A to D to deliver 100 gals. per minute at D under a working head of 80 feet, and draw the hydraulic grade line.