. 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 at- tachment made out in this way, in those cases where there is no covering to the spore-dot. » id) Make a vertical section through the cluster of spore-cases, and study carefully, looking for the ring of darker cells on the spore-cases, (e) The first
. 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 at- tachment made out in this way, in those cases where there is no covering to the spore-dot. » id) Make a vertical section through the cluster of spore-cases, and study carefully, looking for the ring of darker cells on the spore-cases, (e) The first stage of ferns may often be found in Fio. lieT—Cross- plant-houses on or in flower-pots near ferns. They Iro'^d BtenTota ™ay be found also by carefully examining the Brake (Pteris aqul- moist earth among mosses, etc., in shady ravines, of flbro°T^'cular Collect a few of these of various sizes, and keep bundles; io, inner them in water in a watch-glass. Carefully wash dies; m, two bands off the dirt from the under side, and then mount in Pshownta'iflackf-^if ^^t^'". ^"^ examine the imder surface for antherids soft tissue (paren- and archegones (Fig. Ill, A). By careful search- stony ;"** °^ ^^S, young fernlets may be found still attached to the first stage (protliallium), as in Fig. Ill, B). (/) 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. CiAss m. LtcopodinjB {the I/ycopodi), 433. The plant-body consists of a solid, dichotomously branched, leafy, and generally erect stem. The leaves are sma,ll, simple, sessile, and imbricated, and usually bear a considerable resemblance to those of Mosses. The roots are mostly slender and dichotomously branched. 434. The Lycopods are for the most part terrestrial pe
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