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Nebraska Agricultural Exp. Station, Research Bui. 6. 
DESCRIPTION OF PLATE II. 
Fig. 1. — Cross section of upper epidermis. X 233. 
a, cuticula. b, cells of epidermis, c, chlorophyll-bearing tissue of 
leaf. 
Fig. 2. — Longitudinal section of upper epidermis. X 233. 
a, cuticula. b, cells of epidermis, c, chlorophyll-bearing tissue of 
leaf. 
Fig. 3. — Cross section of upper epidermis. X 233. Group of 3 enlarged cells 
concerned in leaf rolling. 
Fig. 4. — Cross section of upper epidermis. X 233. Group of cells as in Fig. 3, 
but with maximum development. 
Fig. 5. — Longitudinal section of enlarged cells of upper epidermis. X 233. 
Fig. 6. — Cross section of lower epidermis. X 233. 
Fig. 7. — Longitudinal section of lower epidermis. X 233. 
Fig. 8. — Diagrammatic drawing of lower epidermis. X 50. 
a, cells of epidermis, surface view, b, stomata (arranged in rows). 
c, nucleus. 
Fig. 9.— Portion of epidermis. X 233. 
To show relation of cells to stoma, a, epidermal cell, b, stoma. 
c, nucleus. 
Fig. 10.— Single stoma. X 500. 
a, subsidiary cell, with prominent nucleus, b, guard cell, c, stoma 
proper (aperture), d, chloroplasts in guard cells, e, nucleus. 
Fig. 11. — Cross section of stoma. X 500. 
a, epidermal cell, b, subsidiary cell, c, guard cell, d, stoma 
proper (aperture). 
Fig. 12— Epidermal hair. X 233. 
