SCIENCE NOTES.

Bruce Herald, Volume XXXXIV, Issue 59, 29 June 1908, Page 2

SCIENCE NOTES.

Every soldier in the Russian army is to be provided with a pocket compass with a luminous needle, and 300,000 compasses, costing £BO,OOO, have already been ordered.

A sight hole to enable a stoker to see the combustion without opening the fire door is a very useful adjunct to a furnace, as an intelligent stoker soon not< a what color indicates that the boiler is doing its best, and learns how to regulate his operations to obtain that color

A nearly perfect timekeeper is the clock that has been installed in the observatory of the Case School of Applied Science, Cleveland, Ohio. Teste show that the clock does not vary more than fifteen one-thousandths of a second from the exact time in twenty-foar hours, a degree of accuracy almost is as that of the sun itself. I

"All foam is white; if the blacket of black inks be beaten vigorously, is loam will be as white as the froth >f milk. The reason of this is," says a scientist, "that we see all objectß ly roflected light. If they reflect all thV rays that make up light, they appear white; if they absorb all the rays, thej soem to be black. The ink absorbs aL the light, and is black accordingly. When it is beaten into froth, the little nubbles reflect all the light from their surfaces—for their extreme thinness makes them v practically nothing blit surface— and thus they are white." I

"White's Natural History" points cut that there is a wonderful spirit of sociality in the brute creation. Many horses, though quiet enough in company, will not stay in a paddock by themselves. Cattle will not fatten by. : hemselves, but will desert rioh pasture lor the sake of company. Sheep, of course, always keep together, and the ttheep-man knows at once there is something wrong if he sees one by iK telf. Nor do animals hanker after their own kind alone. Instances are common where horses and dogs, horses and cats and hens havo chummed up end become inseparable. White gives an instance of the latter on a small place where there happened to be oaly •.lie horse, and also a. solitary h«n, which" spent much of .their time togetherin a quiet orchard. By degrees ah apparent regard began to grow between these two lonely individuals. The fowl* yould approach the horse with nctes f complacency, rubbing herself gently gainst his logs, while the horse woild look down with satisfaction and f move <vith the greatest caution and circianspectioh, lest he should trample on jris diminutive companion. There is sonething attractive in this very hunan trait in the lower creation, and fit ? hould be the cause of more kindwss

. According to o recent Toronto telegram to the Now York 'Tribune, a jiaiiand field, which gives promise of jji'trivalling the famous Kimberley nnea:;. iu the richness of its yield, has iUst' been discovered between Lakes Majrtagami and Shabogama, about 00 riles north of Toronto. . A number cf ?iar monds found on the new field have submitted to experts, who lave declared them to be of exceptional IrillianaCe and purity; -•&>'