. The essentials of botany. Botany. 206 BOTANY. (J) Examine the disposition of the small fibro-vascular bundles in the leaves, whether free or reticulated. Peel off a bit of epidermis from both surfaces, and study the breathing-pores. (c) With a low power study the spore-dots, using top light only. The spore-cases may be easily seen and their a^ tachment made out in this way, in those cases where there is no covering to the spore-dot. (d) Make a vertical section through the cluster of spore-cases, and study carefully, looking for the ring of darker cells on the spore-cases. ifi) The first stag
. The essentials of botany. Botany. 206 BOTANY. (J) Examine the disposition of the small fibro-vascular bundles in the leaves, whether free or reticulated. Peel off a bit of epidermis from both surfaces, and study the breathing-pores. (c) With a low power study the spore-dots, using top light only. The spore-cases may be easily seen and their a^ tachment made out in this way, in those cases where there is no covering to the spore-dot. (d) Make a vertical section through the cluster of spore-cases, and study carefully, looking for the ring of darker cells on the spore-cases. ifi) The first stage of ferns may often be found in Fig. lie"—Cross- plant-houses on or in flower-pots near ferns. They S?^d s°em""ota "^ay be found also by carefully examining the Brake (Pteris aqui- moist earth among mosses, etc., in shady ravines, of 'flbro° vascular Collect a few of these of various sizes, and keep bundles; ig. inner tjjgm in water in a watch-glass. Carefully wash flbro-vascular bun- ~ „ ,. .. - ^, j ., , .. dies; m, two bands off the dirt from the under side, and then mount in (''howMn'blackT;^^* water, and examine the under surface ior antheiids soft tissue (paren- and archegones (Fig. Ill, A). By careful seareh- Bt<my1iis';° ° '°S' y°u°g fernlets may be found still attached to the first stage (prothallium), as in Fig. Ill, B). (f) Collect specimens of Adder tongue or Moonwort, and compare the structure of the spore-bearing organs with, the foregoing. (g) Search the borders of lakes, ponds, and slow streams for Pepper- worts. They may probably be found in every part of the country, although they have rarely been collected. Class in. LTcopoDrwis {the Lycopodi),' 433. The plant-body consists of a solid, dichotomously branched, leafy, and generally erect stem. The leaves are small, simple, sessile, and imbricated, and usually bear a considerable resemblance to those of Mosses. The roots are mostly slender and dichotomously branched. 4
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1884
