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If a light T-piece or so great a length of small india-rubber tube cannot be obtained, then the mouth must be removed from the pipe and the india-rubber tube slipped in when air is to be changed for gas.

The girder, which is slightly inclined to the horizontal plane, is geometrically supported, being carried at its end, and at the extremities of the T-piece, on a V-groove, trihedral hole and plane.

Ah well, the Subaltern thought as he halted at the joint of the T-piece, none of them felt the same about it as he himself did.

The bottle containing the standard solution is connected with the burette by a syphon arrangement through the glass tube and T-piece.