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(.~,)MMENTS.
$3,22L836, compared to 76,367 tons in I!~o8. The exports of lead manufactures decreased slightly, having a value of ahoul $53o,ooo. as compared to $599,64o in 19o8.
The price oยฃ lead started in January with an average of 4--' cents per pound, falling in March to the minimum for the year, 3.95 ceuts per pound, then rising slowly to the close of the year. The average New York price for the year was 4-3 cents per ponnd.
๐ SIMILAR VOLUMES
XI)'II,~S \_\.Nit t I~M\*II.;NiI'b. ## 3 in I9O7, the record year; that in .\lal,ama will 1)ro]mbly be about the same as in 19o7. By taking the production in these Ihree districts as a basis and comparing it with the production in xari(uls parts of the country in previous years the above estimate
The price oยฃ lead started in January with an average of 4--' cents per pound, falling in March to the minimum for the year, 3.95 ceuts per pound, then rising slowly to the close of the year. The average New York price for the year was 4-3 cents per ponnd.
Evaporation of Quicksilver in a Vacuum.--H. Hertz has made some investigations of the evaporation of liquids, especially mercury, in a vacuum. The chief interest of his results is connected with the pressure of the vaper at the ordinary temperature of the air. AccoMing to his experiments, the pressu