4G 
amongst other plants, where they are to remain. Hardy trees, 
shrubs, and' herbaceous plants, when removed to a distance, du- 
ring winter, seldom require any particular care, from iheir being 
in a dormant state; unless they have been very long confined in 
the packages ; in which case, all that is necessary is to throw a 
little soil over their roots, in a temporary manner, in a sheltered 
situation, and cover them w ith a mat for a few days previously to 
their being planted. When herbaceous plants are removed, 
during summer, they soon become weakly, and require to be 
potted, and placed in a shaded situation; either in a cold frame, 
or beneath hand glasses, till they have taken root; when they 
may be gradually hardened, and finally turned out of the pots 
into the places where they are to remain. 
84 Division of Perennials. Aster alpinus, ramosus, acris, 
hyssopifolius, amellus, linarifolius, and punctatus, are favour- 
ites in almost every garden; whilst the tall robust species are 
nearly discarded, or only used for filling up vacant spaces in 
shrubberies, where little care is bestowed upon them. There 
are, however, few plants that will more amply repay for a little 
labour in cultivation than many belonging to this genus. Everj' 
season, early in March, take up all the free-growing sorts, re- 
plant only three suckers of the spreading sorts, and only a small 
piece from the outside of the more compact rooted kinds. As 
they advance in growth, keep them carefully tied to stakes; 
and in autumn, they will produce finer flowers, and in more 
abundance, than if the whole patch had been left to send up a 
great number of flower stems, to the detriment of each other. 
85 Oil of Seeds. To those persons whose occupation, or their 
pleasures, introduce them so frequently amongst seeds of innu- 
merable varieties, it might be interesting to ascertain some of 
the properties of such seeds. All contain more or less of ole- 
aginous matter; and to this circumstance may be attributed, in a 
considerable degree, their longevity when deeply buried in the 
earth. Oil, as an article of commerce, is obtained from seeds in 
various ways; chiefly by heat and expression; sometimes by 
expression without heat; and essential oils principally by distil- 
lation. In a communication from Serangapore, contained in 
the Mechanic’s Magazine, is another method also, which we 
shall quote, “ Let the seeds be ground down or pounded, and 
well mixed by the hand with water. Strain off the liquid, and 
83, 84, D. Cameron. 
