High Frequency Apparatus Page 152

152 HIGH FREQUENCY APPARATUS instance far more rapidly than those in the other beds and more than double the normal growth as shown in the unelectrified bed." The comparative results obtained with the various processes may be noted in the table which follows, and it is interesting to observe that the high frequency current from the Tesla coil takes the lead from the standpoint of weight of the edible portion of both radishes and lettuce grown under its influence: Radishes (ten plants selected at random): Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Telsa Ruby Mercury NorElec. Coil Light Vapor mal Spkg. 137.80 109.50 180.00 78.50 57.40 40.90 79.40 31.00 41.65 37.34 44.11 39.49 75.70 65.90 Total plant weight, grams... 265.70 Edible portion, grams.. .139.50 Edible portion, per cent. 51.15 Tops and leaves, grams. ....120.50 95.00 41.50 Tops and leaves, per cent.... 43.35 54.92 Roots, grams 9.30 4.70 3.20 Roots, per cent.. 3.50 3.43 2.48 60.18 52.77 5.60 6.00 4.85 55.66 3.12 Lettuce (ten plants selected at random) 67.00 52.60 56.60 46.10 31.30 Edible portion, grams.. 60.70 Edible portion, per cent. 90.59 89.92 57.30 50.20 88.85 41.80 28.20 90.67 92.10 Roots, grams 6.30 5.30 6.30 4.30 3.10 Roots, per cent... 9.41 10.08 11.15 9.33 7.99