Scientific amusements . Ants engaged in extracting aphides from a rose-tree (highly magnified). up, although sheltered by thick trees, which necessarilyimpeded the calorific action of the sun ; and he expressedsurprise at the rapid evaporation. An agriculturist amongthe company, however, drew his attention to the fact thatthe roots of the trees were buried in the course of the lO OPfiN-AIK Experiment sliowing evaporatitn of waterby leaves. Stream, and that, far frompreventing the evaporationof the water, the leaves hadcontributed to accelerate the first speaker was notconvinced
Scientific amusements . Ants engaged in extracting aphides from a rose-tree (highly magnified). up, although sheltered by thick trees, which necessarilyimpeded the calorific action of the sun ; and he expressedsurprise at the rapid evaporation. An agriculturist amongthe company, however, drew his attention to the fact thatthe roots of the trees were buried in the course of the lO OPfiN-AIK Experiment sliowing evaporatitn of waterby leaves. Stream, and that, far frompreventing the evaporationof the water, the leaves hadcontributed to accelerate the first speaker was notconvinced, the agriculturist,on our return to-the house,prepared an experimentrepresented in margin. Heplaced the branch of a treecovered with foliage in aU-shaped tube, the twobranches of unequal diame-ter, and filled with placed the vegetablestem in the water, andsecured it to the tube bymeans of a cork coveredwith a piece of india-rubber,and tied tightly to make ithermetically closed. At the commencement ofthe experiment the waterwas level with A in thelarger branch of the tube,and level with B in thesmaller, rising to a slightlyhigher point in the moreslender of the two by capil-larity. The evaporation ofthe water caused by theleaves was so active that ina very short time we beheldthe water sink to the pointsC and C. PRESERVATION OF INSECTS. 1 1 Thus did the excellent method of seeking t
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
