138 THE TREE PROPAGATOR AND PLANTER. 



any good common soil with some sand in it. All except 

 the double Yiolets may be multiplied by seed sown in 

 the autumn or the spring ; in pans in the autumn in a 

 cold frame, and in the spring in the open ground in fine 

 soil. The double Yiolets should be propagated in April 

 or May, 



The Dianthus. 



All the Dianthus tribe are more or less beautiful. 

 The Indian Pink class contains, perhaps, the greatest 

 diversity of any in regard to its colour and pencillings. 

 These may be sown where they are to flower, every 

 March, and treated as annuals. The Barbatus class 

 contains some magnificent varieties, as the Auricula- 

 eyed, which, when true, are superb border plants. This 

 class must be propagated by layers of the young off- 

 shoots to preserve the kind true, for it will degenerate 

 from seed, however carefully sown. The Heddewigii is 

 perhaps the most splendid of the dwarf kind. This is 

 no doubt an improved Indian Pink, and should be sown 

 every spring. The Spanish class is very pretty. The 

 Double Mule Pink is a beautiful class, very dwarf, and 

 an abundant fiowerer ; a choice thing, and will come 

 from seed pretty true, but should be propagated bj r 

 divisions of the root. This is a hybrid. The Deltoides 

 is a small and beautiful dwarf creeper or trailer, suited 

 well for edgings and for covering stones, rockwork, &c, 

 and may be obtained by seed and by division of the 

 root. 



The Oxalis. 



This genus includes some beautiful species and 

 varieties. The 0. tropwoloides is a very conspicuous 

 and useful one. Its foliage is of a dark copper or 

 bronze, the flowers being of a bright yellow, but the 

 foliage is most conspicuous on rockwork. The Oxalis 

 requires a sunny open spot to display its flowers to 

 advantage ; and a sandy soil, good drainage, with an 

 abundance of water in the growing season, and a season 

 of rest for the tuberous and bulbous-rooted sorts, with 



