. Foundations of botany. rs better. This may be made upin quantity, and issued to the pupils in drachm vials, to be taken home andused there, if the experimenting must be done outside of the laboratory or theschoolroom. 2 May be a home experiment. 3 At this point the teacher should give a brief illustrated talk on the con-struction and theory of the compound microscope. STORAGE OF FOOD IN THE SEED .19 Pulp scraped from a potato, that from a canna rootstock, wheatflour, the finely powdered starch sold under the commercial name of cornstarch for cooking, oat-meal, and buckwheat finely pow-dered
. Foundations of botany. rs better. This may be made upin quantity, and issued to the pupils in drachm vials, to be taken home andused there, if the experimenting must be done outside of the laboratory or theschoolroom. 2 May be a home experiment. 3 At this point the teacher should give a brief illustrated talk on the con-struction and theory of the compound microscope. STORAGE OF FOOD IN THE SEED .19 Pulp scraped from a potato, that from a canna rootstock, wheatflour, the finely powdered starch sold under the commercial name of cornstarch for cooking, oat-meal, and buckwheat finely pow-dered in a mortar, will furnishexcellent examples of the shapeand markings of starch all of the kinds exam-ined, taking pains to bring outthe markings.! Compare thesketches with Figs. 7 and 8. With a medicine-dropper or avery small pipette run in a dropof iodine solution under one edgeof the cover-glass, at the same time withdrawing a little water fromthe margin opposite by touching to it a bit of blotting Fig. 7. Canna Starch. (Magnified300 diameters.)
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1901
