1. Of 4,112 earth worms, 3,480 were classified as Eisenia foetidae, and 3,277 of the species were infested with the larvae of Metastrongylus apri. 2. Cresol and $CaCN_2$ were found effective in the insecticidal test of earthworms. 3. The nose ring was...
1. Of 4,112 earth worms, 3,480 were classified as Eisenia foetidae, and 3,277 of the species were infested with the larvae of Metastrongylus apri. 2. Cresol and $CaCN_2$ were found effective in the insecticidal test of earthworms. 3. The nose ring was effective, in pigs, to prevent digging and eating the earthworms and resulted a lower lungworm incidence in pigs. 4. The best place to put the nose ring was the nasal septum.