. A description of some Chinese vegetable food materials and their nutritive and economic value. sof fungi analyzed nearly two days were required for both filtrations,during which time the acid and alkali solutions were in contact withthe material and must have caused lower results than would have beenobtained had the method been carried out under normal conditions. A total of 53 samples was collected, 42 of which were analyzed. Forthe sake of convenience they have been divided into a number of groupsin reporting and discussing the work. ROOTS AND TUBERS. SAGITTARIA, OR ARROWHEAD. The use of t
. A description of some Chinese vegetable food materials and their nutritive and economic value. sof fungi analyzed nearly two days were required for both filtrations,during which time the acid and alkali solutions were in contact withthe material and must have caused lower results than would have beenobtained had the method been carried out under normal conditions. A total of 53 samples was collected, 42 of which were analyzed. Forthe sake of convenience they have been divided into a number of groupsin reporting and discussing the work. ROOTS AND TUBERS. SAGITTARIA, OR ARROWHEAD. The use of the autumn tubers of the various species of Sagittaria,or arrowhead, as articles of food is a common practice among severaldifferent races. Lewis and Clarke, in the account of their memorablejourney of 1S04 across the western United States, make frequent men-tion of the use of the tubers of Sagittaria latifolia (called Wappato) bythe Chinook Indians of Oregon. Kalm refers to the use of the roots 1 Pinkertons Voyages, 13, p. 523. U. S. Dept. of Agr., Bui, 68, Office of Expt. Stations. Plate Plant from an Imported Tuber of Sagiftaria sinensis. 9 of a species of Sagittaria by the Iiidiaus of eastern America. Parrynotes the use of tlie tubers of *S. latifoUa by the Cliippewa Indiaus, andstates that in a raw state they contain a bitter, milky juice, but on boil-ing become sweet and iialatable. Finally Coville ^ notes the use of thetubers of and 8. lafi/oUa by the Klamath Indians of to the use of S. sagittifolia and S. sinensis throughout China,Japan, and portions of India are not uncommon in books of travelrelating to these countries, and apparently forms of these species havebeen in cultivation in the East from very early times. Henry ^ statesthat the arrowhead {S. sagittifolia) is cultivated in all parts of Chinafor its edible tubers, and that there is also a wild form with numerousvarieties which produce smaller tubers. The wild form ociurs malmost
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