xxii CONTENTS 



PAGES 



Data on Water 489 



Kules, 481) — Feet-head and pressure, 481) — Pressure and feet- 

 head, 41)0 — EijuivalenUs for moving water, 41)0 — Foot-loss of 

 water through i)ii)es by gravity, 491 — Friction-loss of water in 

 pipes (pounds), 492 — Friction-head (feet), 493 — Barometric 

 pressure at different altitudes as affecting pumps, 494. 



WindmiU Fifjures 494 



Windmills for pumping, 494 — Power of mill, 495 — Speed of 

 mill, 49G — Loadmg and speed, 497 — Sizes and cost of circular 

 reservoirs for irrigation by windmills, 497 — Cost of nulls, 498. 



Machinery and Motors 498 



Widths of belting, 498 — Size and speed of pulleys or gears, 498 

 — Calculated capacity of piston pumps, 499 — Power required to 

 operate triplex pumps, 500 — Horse-power required to rai.se water 

 to different heights, 501 — Horse-power of steel shafting, 501 — 

 Electric appliances on the farm, 502 — The motor power of a 

 stream, 502 — Hydraulic rams, 503 — Hot-air engines, 503. 



CHAPTER XXVI 



Mason Work. Cements, Paints, Glues, and Waxes . . 504-615 



Building or Mason'^s Cement ; Gravel and Pitch .... 504 

 Approximate estimates of mason-work, 504 — Floors, borders, 

 walks, and foundations, 505. 



Mending Cements 507 



Cements for iron, 507 — Boiler cements, 507 — Tar cement, 508 

 — Copper cement, 508 — Fire-proof or stone cement, 508 — ■ 

 Earthenware cement, 508 — Cement for glass, 508 — Sealing 

 cements, 508. 



Paints and Protective Compounds 509 



Home-made washes for fences and outbuildings, 509 — Fire-proof 

 paint, 509 — For damp walls, 609 — Water-proofing paint for 

 leather, 510 — For cloth for pits and frames, 510 — For paper, 

 610 — To prevent metals from rusting, 510 — To prevent rusting 

 of nails, hinges, etc., 510— To remove rust, 511 — Amount of 

 paint required for a given .surface, 511. 



Olues 511 



Liquid glue, 511 — Flower gum, 511 — Gum for labels and speci- 

 mens, 512. 



Waxes for Grafting and for Covering ]Vounds 512 



Common resin and beeswax waxes, 612 — Alcoholic wax, 513 — 



