Nikola Tesla Books
150 HIGH FREQUENCY APPARATUS are brought to suitable terminals in the top of the transformer case. The case is then filled with transformer oil until the transformer is well covered. It is believed that the drawings will make the details clear and that further description is unnecessary. It is, of course, understood that the line wires supplying the alternating current of sixty cycles at 110 volts are connected with the primary terminals while the secondary ter minals deliver a current at approximately 10,000 volts to the span of wires over the plants to be cultivated; that is to say, one secondary wire leads to the overhead wires while the other secondary terminal is connected with the ground. Actual Results Obtained.-A most interesting report on electroculture experiments was made recently by Mr. T. C. Martin at a convention of electrical men and from this report it may be deduced that, of all the processes by means of which plant life may be stimulated, the one employing the high frequency current as its fundamental principle is the most successful by far. The experiments mentioned by Mr. Martin were carried out at the Moraine Farm, a few miles south of Dayton, Ohio, and located in the celebrated Miami River Valley. The experiments were promoted by F. M. Tait, formerly president of the National Electric Lamp Association, and were in the immediate charge of Dr. Herbert G. Dorsey, whose work in this line has long been worthy of note. "In preliminary tests, according to Mr. Martin's report," says the Philadelphia Inquirer, "small plots were marked off for exposure to different kinds of electrification. To insure that the soil of one plot was not better than that of another, top earth was collected, mixed and sifted and then was laid to the uniform depth of seven inches over the entire area." To quote further:
