Small rounded enclosures of glass are often numerous in them.
Under the system of grazing practised throughout Australia it is customary to allow sheep, cattle and horses to run at large all the year round within enormous enclosures and to depend entirely upon the natural growth of grass for their subsistence.
It also leaves the zoo 's long-suffering animals to languish in their squalid enclosures for even longer.
Farms were divided into infield and outfield; corn crops followed one another without the intervention of fallow, cultivated herbage or turnips, though something is said about fallowing the outfield; enclosures were very rare; the tenantry had not begun to emerge from a state of great poverty and depression; and the wages of labour, compared with the price of corn, were much lower than at present, though that price, at least in ordinary years, must appear extremely moderate in our times.
Bubbles and enclosures of opaque matter, although more readily observed, do not constitute such serious defects; their presence in a lens, to a moderate extent, does not interfere with its performance (see above).