34 BULLETIN 1201, U. S. DEPARTMENT OF AGRICULTURE. 



Cleistanthus colliuus (Roxb.) Benth. & Hook. Euphorbiaceae. East Indies. 



Greslioff (31, p. 141), quoting Biscoe in Indian Forester, says: 

 " The bark must contain some poison property, for not only do 

 white ants leave it severely alone, but it is used here for poisoning 

 fish. The inner bark placed on sores of sheep and goats is efficacious 

 in healing them and in destroying maggots." 



Oibadium surinameiise L. Astekaceae. Tropical America. 

 The writers' results are given on page 22. 



Conium maculatuni L. Apiaceae. Poison-hemlock. Europe. 



Gomilevsky (28) reports that the infusion of flowers, leaves, and 

 stems is effective against various insects. 



Cook and Hutchison (18, p. 4) found the powdered fruit ineffective 

 against fly larvae. 



Cracca villosa purpurea (L. ) Kuntze. Fabaceae. Synonyms: C. piscatoria 

 Lyons, Galega purpurea L., G. piscatoria Ait., Tephrosia piscatoria Pers., T. 

 purpurea Pers. Pacific fish-poison. Old World. 



Lyons (53, p. 145) says: "Fish poison, Auhuhu, Hola (Hawaii). 

 Tropical regions generally. Plant has narcotic properties; used 

 medicinally rri India and to stupefy fish in islands of Pacific." 



The writers' results are given on page 22. 



Cracca sp. Fabaceae. Synonym : Tephrosia. Warm and tropical regions. 



Eoark (75, p. 35) says: " U. S. Patent 1242954. A compound for 

 use as an insecticide and sheep dip is formed from sulphur soap and 

 comminuted Tephrosia (Cracca) plants, seeds, or leaves. U. S. 

 1242955 specifies, for the same purpose, a benzine extract of Tephro- 

 sia (Cracca) 0.5 to 1, soap 4, and dilute alcohol 15 parts." 



Croton eluteria (L.) Swartz. Euphorbiaceae. Cascarilla. Bahamas. 



Howard (44, p- 30) reports that cascarilla bark, used as a fumi- 

 gant in Bermuda, is a mosquito repellent. 



Croton flavens L. West Indies and northern South America. 



Thorns (90) says that this is reported to be an insecticide in 

 Venezuela, but he found it to have no effect on roaches, flies or gnats. 



Croton texensis (Klotzsch) Muell. Arg., C. glandulosus L., C. capitatus 

 Michx., and C. monanthogynus Michx. Crotonweed. 



Riley (71, p. 186) reports that decoctions from the leaves and blos- 

 soms of these species had no effect on cotton caterpillars. 



" Cube " 5 (pronounced koo'-bay), cuyi or cume. Local names in Peru. Peru. 

 The writers' results are given on pages 6, 10 to 20. 



5 The name " cube " is applied, in all tropical America, to several plants belonging to 

 distinct genera, which are used as fish poisons. Among them are species of Jacquinia, 

 and several plants belonging to the family Sapindaceae. The identity of the "cube " here 

 referred to is not certain. It will be necessary to receive botanical specimens of the 

 plant before it can be determined. — W. E. Safford. 



