PROPAGATION OF PLANTS BY SEPARATION OF PARTS. 149 



of life, happiness and beauty, such as the poisoning and 

 pinning of harmless and beautiful insects, the robbing of birds' 

 nests — not to speak of the killing of the birds themselves, - and 

 the tearing up, root and branch, of rare and rapidly disap- 

 pearing wild flowers. Kept in time and place there is nothing 

 to be said against making properly labelled and neatly 

 mounted collections of such objects as seeds and woods, weeds 

 and minerals. 



Common methods of mounting seeds are by putting them in 

 small homeopathic vials or in numbered pockets like those 

 described on the preceding page arranged in boxes. Less 

 expensive than bottles, more convenient to examine, more 

 artistic and requiring more manual ingenuity to put up are 

 the methods illustrated in " Correlation of Nature Study and 

 Manual Training," Nos. 12 and 13, opposite page 46. The 

 engraving shows plaster plaques glazed over the seeds and 

 rubber washers glazed back and front. A wooden plaque may 

 be used instead of plaster, but it is difficult to make the pane 

 of glass fit close enough to the wood to keep minute seeds in 

 their respective places. 



Propagation of Plants by Separation of Parts.— 



This section subdivides into natural and artificial separations. 

 Many of the submerged water-plants multiply freely by 

 detachment of buds and branches. Several shore plants, while 

 relying on other means, are distributed to some extent by the 

 rooting of detached parts. Bulblets in the axils of the leaves 

 of the tiger-lily, among the flowers of the cinnamon vine, wild 

 onion and water-hemlock and beneath the pennae of the 

 bladder-fern are the chief means of multiplying these plants. 

 Strawberries send out runners, blackberries root at the tips, 

 potatoes and Canada thistles send out underground bud- 



