Pine Bluff daily graphic., 1896-04-26
Besides all these manifestations or

1s This will consist of miniature canal, circular in form and filled with water, on which a number of models of the new steel barges now going into use will float. These little boats will be lowed by q miniature model of the Lamb motor, running on cables strung from miniature posts, the whole being an exact reproduction in little of the new system in actual operation.
 Of course it is expected that a great number of eminent men outside the electrical professions will be present. On the opening day there will be most interesting ceremonies. The exhibition will be opened by Gov. Levi P Morton in person, and he will connect the cur. rent of Niagara with the great elec- trieal main of the exposition, using the same golden key which was used for a similar purpose at the big Chicago fair. The mayor of New York and the Mayor of Brooklyn anc host of public men, including governors and judges and congressman and other big wigs, will take part in the ceremonies, and the gathering will undoubtedly become historic because of the brillianee and prominence of those in attendance.
 Edison, silver-thatched and stout, but with face still boyish, and Tesla, much younger, slender and dark haired, with a countenance deeply lined with strenuous thought, will both be there, and thus the two men who have con- tributed most to the marvels of up-to- date electrical science will be on view at the same time. This of itself will be most unusual eireumstanee-one not at all likely soon to occur again. Tesla's most interesting exhibition wili, of course, be his famous oscillator, from which so much in the economical pro- duetion of power is expected. Edison's will doubtless be his ingenious fuoro- scope, by which it is possible, in effect, bo see through solid substances in way that discounts Roentgen, whose photography through solids is to-day the most absorbing subject for scien- tife discussion. Of course there will be exhibitions in plenty of Xray" ap- paratus.
 Quite as significant as any feature of the exhibition that has so far been noted will be the display of storage bat teries. Reference is not now made tt the show of different forms and methods of electrical storage, which will undoubtedly be full and complete, but to the carloads of batteries charged with Niagara power that will be shown. This part of the exhibition was suggest ed by Mr. Frank ". Hawley, who be- lieves that by the judieious use of the storage battery the cost of power in cities remote from the places where it can be most cheaply produced may be enormously decreased. Suppose" said he, in a talk with the writer, that we were to take no account whatever of power produced by falling water, but were to confne our calculations entirely to power from coal combus- ton. Good steam coal is worth in New York, say $1,70 ton. At the mines it is worth 45 cents. The difference in price is what we pay for hauling the coal from the mine to the consumer. Now suppose we were to build great power-house at the mouth of the mine, so placing the boilers that the coal could be shot directly from the hoist ing cars to the furnace grate bars. The steam generated by burning this coal could then be used to produce an cleo tric current at much less cost in money than it could be produced for in New York or Chicago, Boston or any other center of industry. With this current we could charge storage batteries. A sufficient number Of these batteries to furnish thousand horse power for day of 24 hours could be transported for much less money than it would cost to E&ui coal enough to furnish sim liar amount of power for the same length of time. AS fast as the charged batteries were exhausted they could be returned for recharging, and the saving would be great. And as the power-house at the mine continued in operation there would gradually rise great gray heap of ashes-the useless part of the coal, millions of tons of which are now hauled every year over hundreds of miles of railroad tracks at almost in- finite waste.
 Ut seems to me-" said MT. Hawley. 'that the economy of this plan of pow CT production and distribution ought to be obvious to everyone; and, of course, it is just as applicable in places where the current can be made by water pow CT. It bears the same relation to long distance wire transmission that trans porting petroleum in tank cars does to pipeline transmission, and under cer- tain conditions it may be the more de sirable."
 At all events, several carloads of stor- age batteries charged with Niagara power will be shipped to the New York exposition, and much of the current needed for the show will be derived from them, so that Niagara power will be almost constantly used, even during the hours when it is not transmitted over a Western Union commercial