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-------SCIENCE UP-TO-DATE.…

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SCIENCE UP-TO-DATE. THE HEAT OF PAVEMENTS. A careful test was recently made to deter- mine the comparative heat radiation of four kinds of street pavement. The average tempera- ture of Macadam was found to be 102deg.; of asphalt, 113deg.; of granite, 115deg.; and of wood, 124deg. This shows that the general be- lief as to the excessive heat of asphalt is erroneous, for wood is the hottest material in use. Theoretically, asphalt might be thought less dusty than any other kind of pavement, but practically it is worse than Macadam in this respect, owing to the difficulty of keeping the surface properly wet. Besides, con- stant travel has the effect of grinding the asphalt into fine powder, and thus produces dust all the time. The ideal paving material has evidently not yet been found. One is needed that will not retain and radiate heat, the surface of which be kept clean and wet. While the asphalt has many advant- ages, it is not exactly what a city wants. Moreover, in winter it is a dangerous footing for horses. 0

BREEDING FRUIT.

A PLANT THAT EATS.

----RUMINATION IN MAN.

PUTTING OUT FIRE IN SHIPS.

ELECTRIC BELL BATTERIES.

PHYSIOLOGICAL EFFECT OF LIGHT.

----ARTIFICIAL CLAY.

THEINE.

LONG-TONGUED BEES.

THEISURE HOUR.

- Thoughts, The Passing I…

- Win

....... A Christmas Greg.

♦. The Years go By.

. The Ending of the Year.…

.........-----Human Progress.…

The Passing and the Permanent.

ON TRAMP AGAIN. -

Cymu Fu.

, ARTHOG.

P A lt ABOUT PHOPLR. .

- A Very Good Reason. -

ILLANDYSSUL.

---------LLANYBTHER.

RICE AND MALARIA.

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