minutes, and have ceased to exist in a further period of the same duration.
In Fig. 5 there is shown a view of the portable lethal chamber ready for use. It takes the shape of a closed truck on two wheels, and movable like a truck or barrow. It measures five feet in length, is two feet wide, and two feet six inches high. It moves very easily,
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/PSM_V26_D668_Portable_lethal_chamber.jpg/480px-PSM_V26_D668_Portable_lethal_chamber.jpg)
Fig. 5.—Portable Lethal Chamber.
and can be managed by one man. It is constructed, like the large lethal chamber, of well-seasoned wood, in double wall, with sawdust filling up the interspace. In Fig. 6 the apparatus is shown in section. There is one large chamber, having a capacity of nine cubic feet. The chamber opens at the top by a strong lid, swung from behind, which.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/48/PSM_V26_D668_Section_of_portable_lethal_chamber.jpg/480px-PSM_V26_D668_Section_of_portable_lethal_chamber.jpg)
Fig. 6.—Section of Portable Lethal Chamber.
when brought down, entirely closes it up. Under this lid there is a frame with an opening in the center, through which baskets or cages of different sizes, and containing the animal or animals, can be let