PLATES. 



PAGE 



Illustrations on Fish Culture— Figs. 1, 3, 5, 6, 7, 8 .. 43, 47, 50 

 Microbes in Water— Figs. 6 to 11, 17 to 22 .. .. 61,73 



Laboratory Liquefaction Apparatus — Fig. 1 .. .. .. 144 



Liquid Ethylene-Flame Calorimeter — Fig. 2 .. .. .. 144 



Lecture Apparatus for Projecting the Liquefaction of Air — 



Fig. 3 144 



Plan of Comparing Temperatures of Liquefaction and Small 



Vapour Pressure — Fig. 4 .. .. .. .. .. 144 



Specific Gravity Vacuum Globe — Fig. 5 .. .. .. 144 



Arrangements of Regenerating Coils — Fig. 6 .. .. .. 144 



Apparatus for Measuring Passage of Gas — Fig. 7 .. .. 144 



Apparatus Used in Production of the Liquid Hydrogen Jet — 



Fig. 8 144 



Chart, Electrical Resistivity and Temperature . . .. .. 249 



Chart, Thermo-Electromotive Forces .. .. .. ..259 



Niagara Turbines .. .. .. .. .. -. .. 273 



Illustrations on Diamonds and Diamond Mines — Figs. 1 to 30 



478, 480, 482, 484, 486, 496, 500 



Cathode Ray Spectrum .. .. .. .. .. .. 689 



Results obtained with Anti-Cathodes, &c. .. .. 591, 593 



Pin-Hole Rontgen Ray Photographs .. .. .. .. 598 



Diagrams to Illustrate the Bringing of Water to Birmingham 



— Figs. 1 to 11 681 to 689 



Illustrations to Theory of Colour Vision applied to Modern 



Colour Photography .. .. .. .. .. ,. 805 



