A Manual of Experiments in Elementary Science: Teacher's Edition (1918)
Curtis, Francis D. · Charles E. Merrill Company · leaf 171
147 GROWTH OF THE SEEDLING No. 105. RELATION BETWEEN THE COTYLEDONS AND THE GROWTH OF THE SEEDLING Materials. — Pasteboard box or can filled to a depth of about 1 in. with sawdust or bran ; a few pea seeds ; bottle, tumbler, or flask ; square of cheesecloth ; string. Method. — Moisten thoroughly… … Fill the bottle with water and tie the cheesecloth tightly over the top. Pierce the cheesecloth in two places and insert the roots of two of the sprouted peas. Be sure that the water touches the roots. After another day or so during which the seedlings will have grown per¬ ceptibly, carefully…
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