LIST OF ILLUSTRATIONS 
,Fig. Page 
1 Plank Drag 3 2 
2 Different Forms of Horse Cultivators 33 
3 Different Forms of Hand Cultivators 35 
4 Combination Hand Seed Drill and Cultivator 36 
5 Different Forms of Hand Hoes 37 
6 Different Forms of Horse Weeders 38 
7 Different Forms of Hand Weeders 39 
8 Hauling Manure Near Boston 45 
9 Manure Compost Heap 46 
10 Night Soil Tank Wagon Used Near Baltimore 51 
11 Single- Row Fertilizer Distributor 66 
12 Wheelbarrow Fertilizer Distributor 67 
13 McWhorton Fertilizer Distributor 68 
14 Lime Spreader 69 
15 Seven-Outlet Nozzle and 3-Outlet Nozzle, Manaway System 
of Irrigation 79 
16 Nozzles, Quick Acting Coupling and Flush Valve, Skinner 
System of Irrigation 80 
17 Union for the Skinner System of Irrigation 81 
17A Automatic Oscillator for Overhead Irrigation Svstem 84 
18 Irrigation System Installed at The Pennsylvania State Col- 
lege 83 
19 Sash for Hotbed or Cold Frame 107 
20 Flue-Heated Frame 111 
21 Steam-Heated Frame 112 
22 Frame Yard in Philadelphia Section..-- 1 1 4 
23 Peppers in Cold Frames 1 15 
24 Permanent Cold Frames 116 
25 Cucumbers in Cold Frame Plat 117 
26 Uneven and Even-Span Greenhouses 123 
27 Three-Quarter Span Greenhouse 124 
28 A Common Form of Greenhouse Bracing 125 
29 Different Forms of Hand Seed Drills 136 
30 Lath Screen 138 
31 Popular Marker 142 
32 Homemade Marker 142 
33 Different Forms of Dibbers 143 
34 Different Forms of Trowels 143 
35 Useful Plant Setter 144 
36 Transplanting Board and Dibber 145 
xi 
