allowed, except upon the written consent of the Engineer or his duly authorized representative.

DRAWINGS.

The drawings will be made to the scales indicated, but in all cases the figures are to be followed in preference to the scale, where there is any discrepancy between the two. The drawings are to be followed exactly, excepting in cases of errors or omissions, which must be referred to the Engineer for correction or for additional information.

TIMBER.

All timber shall be of good quality, and of such kinds as the Engineer may direct. It must be free from wind-shakes, wanes, black, loose, or unsound knots, sap, worm-holes, and all descriptions of decay, or any other defect which would impair its strength or durability. It must be sawed true and out of wind, and to exact dimensions. Under no circumstances will any timber cut from dead logs be allowed to be placed in any portion of the structure; but all timber must be cut from living trees.

PILES.

The piles are to be cut from good, live trees of such varieties of timber as may be selected by the Engineer. They must be straight, sound, and perfectly free from wind-shakes, wanes, large, loose, black, or decayed knots, cracks, worm-holes, and all descriptions of decay; and they must be stripped of all bark.

If square piles are to be used, they must be hewed square and not sawed, but must be as free as practicable from axemarks. Square piles must be at least twelve (12) inches across the face, and must show not more than two (2) inches of sap across the corners.

The sizes of round piles will depend upon their length, but in no case shall they be less than nine (9) inches in diameter at tips. They shall be so nearly straight that a right line, taken in any radial direction and running parallel to a right line joining  the  centres of ends of pile, shall show that the pile