246 VEGETABLE FOES AND DISEASES 



of rats and mice, also other depredatory pests. On a 

 large scale the seed may readily be coated with paraffin 

 oil by placing in a vessel, sprinkling with the oil, and 

 turning over a few times, so as to coat the seed in 

 every part with the oil. 



Treating the seed with a solution of carbolic acid, 

 one pint of acid to six quarts of water, kills the beetles 

 without hurting the seed. As a combined insecticide 

 and fungicide the following recipe, taken from Miss 

 E. A. Ormerod's Manual of Injurious Insects, p. 7, 

 has been found effectual. Water, six quarts ; blue 

 vitriol, one pound ; sewage carbolic, one pint. This 

 dressing is for six bushels of Beans, sprinkling on and 

 turning the Beans with a shovel. The liquid passes 

 through the thin film of coating of the Bean or Pea at 

 the end of the gallery and kills the beetle within. 



THE ILLUSTRATIONS REPRESENT BEAN AND PEA BEETLES AND 

 INFESTED BEANS AND PEAS. 



A, Bean Beetle : #, natural size ; b, magnified. B, Bean Beetle 

 larva : d, magnified. C, Bean Beetle pupa : e, natural 

 size ; f y magnified. D, Broad Bean infested with Bean 

 Beetle : g, aperture from which beetle has passed out of 

 Bean ; ^, little round depression in skin of Bean, slightly 

 yellowish and transparent, the Beetle being in gallery eaten 

 away in Bean substance. E, Pea Beetle : /, natural size ; j 9 

 magnified. F, Pea infested with Pea Beetle : k, depressed spot 

 in skin of Pea, the round spot being depressed, as also the 

 area of the gallery, but skin intact, indicating presence of 

 beetle in Pea, if open, the beetle has passed out. G, germin- 

 ated Pea, the Pea having been treated with paraffin oil before 

 sowing and the beetle killed, if coming out of the Pea : /, 



