In continuation of some researches on the temperature of man. Dr. Davy communicated [ to the Royal Society the results of his observations on this subject, during a period of three years and a half, chiefly at Barbadoes where the mean annual temperature of the atmosphere, he states, is 80 Fah., and the range of temperature throughout the year from about 10 to 18 in the open air. The observations were made three times a day; the temperature of the body being noted, with that of the external air, the pulse and the number of respirations per minute; all of which are duly set forth in elaborate tables. The chief general results are the following :— 1. that the average temperature of man within the tropics is a little higher—nearly 1 — than in a temperate climate; such as England. 2. That within the tropics, as in cooler regi-ons, the temperature of the body is almost constantly fluctuating. 3. That within the tropics, as in cooler climate; the minimum [ degree being early in the morning, after a night's rest, and not at night. 4. That all exertion, whether of body or mind, except it be very gentle, has a heightening effect on the temperature; while passive exercise, especially carriage exercise, has a lowering tendency. 5. That heavy clothing, if tight and close, tends to raise the temperature unduly, especially under active exercise; and that close, ill-ventilated rooms, particularly when crowded, have in a marked manner the same tendency. 6. That when the body is in a healthy state, it rapidly recovers its normal condition as to temperature. 7. That when laboring under disease, however slight, the temperature is abnormally elevated, its undue degree being some criterion of the diseased action. 8. That within the tropics there is comparatively little difference of temperature between the surface of the body and the internal parts ; the skin is more active in its functions, and the kidneys are leBS active. 9. That the effect of wine, unless used in great moderation, is commonly lowering as to temperature, while it accelerates the heart's action, followed, alter a while, by an increase of temperature. 10. The tendency ot sea-sickness, like that of disease, is to elevate the temperature. 11. The tendency of a sea-voyage, apart from seasickness, is to equalize the temperature without permanently elevating it. 12. That even at sea, with, a change of atmospheric temperature, there is a tendency to change of temperature of the body, inereasing towards the tropics. The most interesting facts, however, are the changes of temperature depending on changes of health or disease, and thelowering influence of wines and ordinary stimulants. n iron railroad bridge over the Mononga-hela, above Fairmount, Ta., is nearly completed. It is said to be the first in size in the United Strtes, aad second only to that over the Menai Strsits ir. Great Britain..