50 BULLETIN 1201, U. S. DEPARTMENT OF AGRICULTURE. 
Solanum tuberosum L. Potato. 
Gillette (27, p. 185) rubbed concentrated potato water on cattle 
and found that it aeted slowly, but eventually it rid the animals 
of lire. 
Scott, Abbott, and Dudley (83, p. 14) found potato starch ineffec- 
tive against roaches. 
Sophora flavescens Ait. Fabaceae. Siberia. 
Greshoff (33, j>. 65) reports that a decoction of the steins and 
leaves is used in Japan as an insecticide. 
Sophora griffithii Stocks. Synonym: Keyserlingia grifflt hii Boiss. 
Greshoff (33, p. 65) quotes: "The seed used powdered and mixed 
with oil kill lice in the hair." 
Stipa viridula Trin. Poaceae. Sleepy grass. 
The writers' results are given on page 2&. 
Sunia rubra. (See footnote on page 20.) 
The writers' results are given on page 23. 
Synandrospadix vermitoxicus Engl. Abaceae. Argentina. 
Greshoff (31, p. 158) reports that the poisonous bulbs serve for the 
destruction of injurious insects. 
Tagetes minnta T.. Astebaceae, Synonym: T. glandulifera Schrank. South 
America. 
Von Mueller (01, p. 522) says: " This vigorous annual plant is said 
by Doctor Prentice to be pulicifugous." 
Tamus communis L. Dioscobeageae. Black-bryony. Europe. 
Greshoff (31, p. 152) reports that the powdered root has been rec- 
ommended to destroy lice in children's hair. 
Tanacetum vulgare L. Asteeaceae. Common tansy. Europe and northern 
Asia, cultivated and naturalized in the United Stales. 
Gieseler (£6) reports that the heads exert an effect on insects simi- 
lar to that of pyrot liium. 
Kalbruner (%7) determined that the (lowers of this species were 
very feebly benumbing to flies. 
Riley (71, />. 186) says that an alcoholic extract and an infusion 
had no effect on cotton caterpillars. 
Martindale (see Kirby, Ifi, />. 2' t l) states that an action similar to 
that of Persian insect powder IS produced by the common tansy, 
which is sold in the north of England for similar purposes. 
Simmonds (8h, p. W%) states that the flowers of tansy are said 
to have a stupefying effect on insects. 
Devin (2U p. 36) says that he has heard it reported that a clump 
of tansies, growing about the base of the tree, gives perfect immunity 
against l he plum ciirculio. hut Slingerland [85, />. /.%') says that 
tansy planjts, grown near peach trees, have only a very slight effect 
on the peajch-tree borer. 
