34, pp.

33-41, Fox.
White, _Jun.

Mun._, 10: 362.
Hulbert, _Outl._, 76; 801.
_Wood Craft_, 4: 55.
Smith, K., _World's Work_, 7: 4435.
Mechanical Methods.
_World's Work_, 7: 4435.
_Outl._, 76: 812.
Bruncken, p.

86.
Bruncken, pp.

76-87.
Munn, _Cosmop._, 37: 441.
Roth, _First Book_, pp.