Explorations and field-work of the Smithsonian Institution in .. . Fig. 48.—Tropical dogwood, Big Pine Fig. 49.—Gathering fish by tlie primitive method of using the roots of plants. 56 SMITHSONIAN INSTITUTION One of the most striking trees of the Key is the tropical dogwood(Piscidia coiihiiii(iiis), a member of the pea family, and not at allclosely related to our common well-known dogwood. Its nearest alliesare the tropical genera Loiiclwcarpiis and Dcrris, some of the speciesof which contain rotenone, an important ingredient of many insecti-cides. The roots of these plants are used by t
Explorations and field-work of the Smithsonian Institution in .. . Fig. 48.—Tropical dogwood, Big Pine Fig. 49.—Gathering fish by tlie primitive method of using the roots of plants. 56 SMITHSONIAN INSTITUTION One of the most striking trees of the Key is the tropical dogwood(Piscidia coiihiiii(iiis), a member of the pea family, and not at allclosely related to our common well-known dogwood. Its nearest alliesare the tropical genera Loiiclwcarpiis and Dcrris, some of the speciesof which contain rotenone, an important ingredient of many insecti-cides. The roots of these plants are used by the natives in many partsof the tropics for fishing. Some years before, on an expedition to theAmazon Valley, I had watched the Indians chop up the roots ofLonchocarpus, which they called cube , barbasco , or timbo ,mix them with water, ]:)our the resulting liquid into a stream, and wadein to capture the paralysed—not truly poisoned—fish. As the Divisionof Fishes of the National Museum was desirous of obtaining speci-mens of the smaller fish inhabiting the waters about the Florida Keys,on both of t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1912
