correspondent from Wuhu enquiring as to primitive frigeration operating on the princlple of evaporation, can be fully an-'Swored as recent ests completed on British. product now being inteoduced to the China Trade have vealed very satisfactory results, The small refrigerators mantua tured in England are made of a highly scientific clay which drawing the water from a small tank built. into the structure enables rapid and fective evaporation to result, thus Producing cold within these boxes, In normal temperatures of 10d grees to 75 degrees the difference tween external temperature and frigerator temperature is about 18 degrees but this difference increases considerably as the external temper is raised. In a Test Box speclally construct of these refri temperature was raised to 104 degrees within one half-hour the refrigerator temperature dropped to 72 ogres or a difference of 82 degrees, AL temperatures in the vicinity of 80 and 85 degrees the difference is usually about 25 degrees. ey do not usurp the functions of the motor-driven refrigerators and fare not so Intended, but as their cost small they are of very great bene-to. the classes who cannot, consider the high priced product Shanghai, Mar. 8.
Text read from the printed page and cleaned; old type leaves the occasional error.