Calendar: 1883-1884 Page 646

642 GENERAL LITERATURE AND SCIENCE force Ρ acts upon it so as just not to pull it up the plane ii direction inclined to the plane at an angle of 30 find Ρ tan φ 19 stone wall whose section is trapezium with one Bid Vertical is subject to the pressure of water on its vertical face the height of the wall is 12 feet its thickness feet al the top and 11 feet at the bottom Find the equation to the line of resistance the wall being twice as heavy as its own bulk of water Prove that the moment of inertia of thin lamina about an axis through its centre of gravity perpendicular to its plane is equal to the sum 0£ the moments of inertia about two axes at right angles to one another in the plane of the lamina Shew that the moment of inertia of cylinder about diameter of one end equal Ψ τ where is the height and the radius of the base of the cylinder XXVI -3Pi jj£Stcal eeograpijin Describe the modes of origin of the several kinds of valleys Explain the nature of the work done by the sea in elaboration of scenery Distinguish the several kinds of springs from each other State the modes of origin of rivers Enunciate the circumstances to which the chief kinds of wind are due iState any evidence which would show that the presen distribution of life has resulted from past changes in the earth's physical geography Give some account of the several branches of the human racet