LIST OF ILLUSTRATIONS 



Fig. Page 



1. A modern range of houses at Toledo, Ohio 14 



2. Typical three-quarter-span houses of the Boston district 15 



3. Two-acre three-quarter-span hillside house near New 



Castle, Pa. 16 



4. Boiler room and packing house of a ten-acre range near 



Toledo, Ohio - 17 



5. Wide corridor in a Toledo, Ohio, range 19 



6. Typical even-span range of narrow units 20 



7. Even-span houses with continuous ventilators 21 



8. Lean-to house. Note protected frames 23 



9. A modern steel-frame house. Note large door 24 



10. A satisfactory type of semi-iron construction 25 



11. A house of truss construction 26 



12. Semi-iron construction, showing posts and purlin sup- 



ports set in concrete 27 



13. A common form of wood wall sill 28 



14. Iron eave plate. Note roof bar and post bracket 28 



15. Wooden gutter 29 



16. Iron gutter with roof bars connected. Also shows con- 



nections with iron post 29 



17. (a) Typical roof bar. (b) Typical end bar 30 



18. Semi-iron house. Note large door and ventilators on 



sides and end 31 



19. A satisfactory machine for operating ventilators 32 



20. A corridor leading to the packing room in a large range 33 



21. Bench with pipe-frame support 34 



22. Concrete pillars for bench supports 35 



23. Walk with concrete sides. Peerless tomato in an Iron- 



dequoit (New York) house 37 



24. An alley of liberal width in a cucumber house 41 



25. Roadway in a two-acre house : 45 



26. Manure spreaders, plows and harrows are often used in 



modern houses 61 



27. Manure is usually placed in compost piles near the 



houses. (In this instance, mushroom houses) 71 



28. Small smoothing harrow 83 



29. Pan steam sterilization in operation at the Indiana Agri- 



cultural Experiment Station 86 



30. A portable steam engine may be used for sterilizing 



small houses 94 



XV 



