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Show BITS OF SCIENCE. Platinum can now be drawn into wire Strands so fine that twenty-seven twisted together can be inserted into the hollow I of a hair. Experiments made in Austria make it i ! appear that the addition of sodV to Port- land cement enables it to withstand the j action of frost. I According to the assertion of the eminent emi-nent physiologist, Sappy, the stomach contains 5,000,000 glands by which the gastric juice is secreted. . A luminous crayon has recently been invented to enable lecturers to draw on the blackboard when the room is duri. ened for the use of tho lantern. Professor Hartley, of the Dublin College Col-lege of Science, declares, as the result of his experiment, that we may expect tvster color drawings to last 400 years, I provided they aro protected from the in- ' fluence of direct sunlivht. |