36 BULLETIN 1201, TJ. S. DEPARTMENT OF AGRICULTURE. 



Delphinium staphisagria L. Lousewort. * Mediterranean region. 



Hare, Caspari, and Rusby (38) say that this species is employed in 

 medicine solely as a local application for the destruction of lice and 

 the itch-mite. 



Delphinium sp. Larkspur. 



Osborn (63, p. 175) reports that Tenny recommends a decoction of 

 the seed of common larkspur as an insecticide against the short- 

 nosed ox louse. 



Cook, Hutchison, and Scales (17, p. 14) found that a sulphuric- 

 acid extract of the ground seed had a considerable, effect on fly larvae, 

 and Cook and Hutchison (18, p. If) obtained similar results by using 

 an infusion of the ground seed, but none of these were efficient. 



Derris elliptica (Wall.) Benth. Fabaceae. Malayan or East Indian fish- 

 poison. Aker. Tuba. Malayan region. 



See " Derris as an insecticide," by Mclndoo, Sievers, and Abbott 



The results obtained during this investigation by the writers are 

 given on pages 7, 10 to 20. 



Derris uliginosa Benth. Eastern fish-poison. Old World Tropics. 



Perredes (67) says: " In India it is known to act as a poison upon 

 worms and the larva? of insects which trouble the cultivators, whence 

 the Marathi name Kirtana, or ' worm-creeper.' " 



Howard (44-> V- ^0 reports that a decoction placed in water at 

 the Wellcome Research Laboratories at Khartoum had considerable 

 potency against mosquito larvae, but also killed the fish present in 

 the water. 



Diospyros malacapai A. DC. Ebenaceae. Philippine Islands. 

 Greshoff (31, p. 103) reports the wood as an insecticide. 



Echinops echinatus Roxb. Asteraceae. East Indies. 



Greshoff ( 33, p. 160) , quoting Burkill, says : " The roots are 

 pounded and applied to the hair to destroy lice, also the powdered 

 roots applied to wounds in cattle to destroy maggots." 



Eucalyptus globulus Labill. Myetaceae. Blue gum. Victoria and Tasmania. 



Von Mueller (91, p. 192) says : " Warren reports from San Fran- 

 cisco that branchlets of eucalyptus will drive mosquitoes and other 

 insects out of rooms." 



Eucalyptus spp. 



Riley and Howard (73, p. 268) quote a correspondent who says 

 that a few twigs or leaves laid on the pillow at night will secure 

 perfect immunity against mosquitoes. 



Sanders (77, p. 344-) says that when a grove of eucalyptus is 

 planted near the house mosquitoes never give annoyance in the house, 

 but Howard (43, p. 62, and 44, V- ®®) states that eucalyptus trees are 

 probably of no value as mosquito repellents. 



Howard (43, p. 59), quoting Celli and Casagrandi, says that the 

 fumes from the fresh leaves will kill mosquitoes if the air is 

 saturated. 



