. Scientific American Volume 51 Numéro 20 (novembre 1884) . s témoignage de la justesse de l'ourtheory quant à la cause des feux fréquents dans les granges, un archi-tect de l'Iowa écrit à l'architecte américain, dans quel papier notre article a été copié, la lettre suivante: Nous être-lieve l'idée de l'écrivain n'est pas nouvelle, et que les brevets hiivebeen grar^ted pour des modèles similaires de ventilation foin mowsand grains bacs, néanmoins les suggestions de la writerare bonne. Comme cette question est d'une importance plus vitale que la plupart des peo-ple, même les hommes scientifiques, sont conscients, je le ferai, dit le correspondant des Architectes,

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. Scientific American Volume 51 Number 20 (November 1884) . s testimony to tlie correctness of ourtheory as to the cause of frequent fires in barns, an archi-tect from Iowa writes to the American Architect, into whichpaper our article was copied, the following letter: We be-lieve the idea of the writer is not new, and that patents hiivebeen grar^ted for similar models of ventilating hay mowsand grain bins, nevertheless the suggestions of the writerare good. As this matter is of more vital importance than most peo-ple, even scientific men, are aware of, I will, says theArchitects correspondent, venture to suggest a mode toventilate haylofts, and to give veterinary surgeons somethingto think of. I believe that one-half of the diseases in horsesand cattle is brought on by feeding spoiled hay, eithertaken from hay mows or stacks, also from grain feed thathas been heated and spoiled. I believe that the heating pro-cess, the mouldy parts and must that it produces, will creategerms of various kinds that cause diseases in horses and cat- fPli^^ra^, t/n. THE ELECTRIC TORCHLIGHT PROCESSION IN NEW YORK. Steam Power Company; a belt led from the engine to apulley on the armature shaft. Secured to the truck was thepole of one of the largest steam fire engines built by theClapp and Jones Company. The electricians in charge ofthe display felt assured of the successful working of theirdynamo and engine, and in order to have an ample supplyof steam, they obtained the fire engine, which they knew tobe a rapid and reliable generator while in motion. Extend-ing from this boiler to the engine were two flexible pipes, one leading to the steam chest and the other carrying theexhaust. The latter pipe was provided with a three-wayvalve, by means of which the steam could bedirected eitherinto the smokestack to increase the draught, or into the openair. Following the fire engine were two ordinary wateringtanks, holding 930 gallons, which were connected to thefeed pump by lines of hose. Between t

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