18 



INDEX TO ILLUSTRATIONS. 



Jajiy nozzle, I, 265, fig. 61. 



Machine for destruction of insects in mills, VII, 263, 



fig. 27. 

 Marseilles nozzle, construction, I, 266, fig. 62. 

 New Zealand triplet, I, 268, fig. 63. 

 NoiJl nozzle, I, 248, fig. 57. 

 Kon-swarming device, Langdon, V, 231, 232, 233, 



figs. 31, 32, 33, 34. 

 Quajat's horizontal serimeter, I, 337, fig. 76. 



Riley, or c.ycIone nozzle, I, 244, fig. 54. 



Kobinet'sserimeti r, I, 333, fig. 74. 



Spraying apparatus, designed by Dr. Roland Thax- 



ter, III, 39, fig. 3. 

 Standard serimeter, I, 336, fig. 75. 

 Universal spray tip, I, 245, fig. 55; 246, fig. 56. 

 A'ermorel nozzle, I, 263, 264, figs. 58, 59. 

 Vial holder in use in U. S. National Museum, II, 



346, fig. 66. 



