﻿in London tliat are entirely free from tliem, and tliey are gra- 

 dually fiiulini,' their way, by the constant traffic going on, into 

 every city and town in England. To prevent their emigration 

 is impossible, for although they are fortunately destitute of the 

 oro-ans of flight, a trunk or great-coat remaining one night in 

 an infested room may harbour enough to stock a whole house; 

 and they have even been observed in vast numbers coming out 

 of the cracks of Canada timber employed in the structure of 

 new houses. As every one may be subject to this annoyance, 

 nothing would be more acceptable than a remedy, and perhaps 

 the easiest and most effectual is extreme cleanliness and con- 

 stant vigilance : if a bed-room, for instance, be infected, all 

 chinks in the wall should be carefully stopped with plaster of 

 Paris, the ceiling washetl with lime, and the floor scrubbed 

 with hot water and soap ; every nail-hole and crack in the bed- 

 stead must be filled with putty, and after being taken to pieces 

 and well scrubbed, it ought to be washed, when dry, with spi- 

 rits of turjjentine, or a solution of corrosive sublimate, which 

 has not so unpleasant a scent as the turpentine, and is, I 

 think, even more efficacious ; and the skirting-boards and even 

 the walls may be washed with this solution without detriment, 

 except where there are metallic mouldings. In travelling, par- 

 ticularly abroad, I have freed myself from these persecuting 

 animals and obtained a good night's rest, by sprinkling the 

 sheets with spirits of turpentine before going to bed. 



The House-bug makes its appearance with the first warm 

 days of spring, and is found during the summer months. As 

 soon as it is hatched from the egg it can run about, and is 

 then so transparent that the blood can be distinctly seen 

 through the abdomen; after becoming pupa? there is little dit- 

 ference in their api)earance except in si/e and colour, and in 

 their perfect state they very much resemble the pupa?. I have 

 some idea that in the last state, the males do not suck the 

 blood of man, and if I am not very much mistaken the Bug 

 frequently turns his rostrum over his head as represented at 

 fi". 1. p, when he feeds, in which case he cannot well pierce 

 the object he stands upon. It is also a remarkable cjuality that 

 many of the Cimicida? jiossess, of connnunicating an oflensive 

 odour when touched. Bugs are very active at night, but they 

 secrete themselves during the day; they can live a very long 

 period without nourishment, and DeGeer observed that tliey 

 occasionally fed upon each other: we learn also from Latreille 

 that they torment the young of pigeons, swallows, Sec, but 

 that which lives on the latter birds forms a distinct species. 



The Plant is Etysimwn Alliaria or Alliaria ojjicinalis 

 (Sauce-alone, or Jack by the Hedge). 



