APPERDEX "GC, 
MATERIAL FOR STUDY. 
Chapter I.—Squash-seeds, beans, peas, sunflower-seeds. 
Chapter II, — Barley, red-clover-seed, seedlings of several kinds, 
2-6 inches high, growing in earth, sand, or sawdust. 
Chapter III. — Sprouted peas, clover-seed, four-o’clock-seed, Indian 
corn, boiled green corn in alcohol, bean seedlings 3 weeks old, ground 
flaxseed, soaked corn, corn meal, flour, oatmeal, buckwheat flour, rye 
flour, sunflower-seeds, peanuts, Brazil nuts. 
Chapter IV. — Cuttings of Wandering Jew (Tradescantia zebrina), 
corn-stalks with roots, water-hyacinth, microscopic sections of roots, 
parsnips, dahlia roots or sweet potatoes, begonia leaves. 
Chapter V.— Twigs of horse-chestnut, hickory, beech, etc., with 
winter buds, potatoes, onions, rootstocks of iris, sweet flag, or sedges 
(best in preservative fluid). 
Chapter VI. — Apple twigs, fresh or in preservative fluid, hickory 
or white-oak twigs of three or more years old, set of Hough’s thin 
sections (footnote, p. 53), billets of as many kinds of native wood 
as are obtainable (with the ends planed smooth and split through 
the pith), cylinders from three or four year old hickory, or elm twigs, 
thin sections (see list at end), corn-stalk (in preservative fluid), 
palmetto, rattan, bamboo, asparagus. 
Chapter VII.— Fresh shoots of grapevine, twigs of oak, ash, or 
elm, fuchsia growing in a flower-pot, microscopic sections (see list at 
end), potatoes, onions. 
Chapter VIII.— Twigs with winter buds of horse-chestnut, 
hickory, beech, tulip tree, lilac. A cabbage, a Bryophyllum leaf. 
Chapter [X.— Leafy twigs of elm and maple, a variety of netted- 
veined and some parallel-veined leaves. 
1 See list at end of Appendix C. 
