150 PLANT PROPAGATION 
Mustarp (Sinapis alba).—For use with Common 
Cress this may be sown on the surface of soil pressed 
level and made moist in shallow boxes and covered with 
a sheet of glass or piece of slate until germination takes 
place. The operation should be carried out indoors in 
cold weather, and outside from May to -September. 
Mustard seeds germinate more quickly than Cress, so 
that, if wanted for use together, it should be sown three 
days later than the Cress. 
Myosortis (FORGET-ME-NoT).—These favourite spring 
flowers are easily raised from seed sown outdoors in 
summer. Choice varieties are perpetuated by division of 
old plants in spring, and by cuttings inserted under 
handlights on a shady border in summer. When re- 
moving the old plants in spring to make room for the 
summer occupants, some growers plant a few in a piece 
of spare ground and obtain later an abundant supply of 
self-sown seedlings. 
Myrica (Wax MyrtTLe aNd Sweet GALE).—Hardy 
evergreen shrubs delighting in a sandy peat soil. They 
are propagated by cuttings inserted under handlights in 
a shady position in spring and autumn. 
MyrsipHyLLuM.—The: useful sprays of M. aspara- 
goides, known to the florists under the name of Smilax, 
are raised by sowing seed in heat in March and planting 
out in a prepared bed of loam and leaf-mould in a warm 
greenhouse, training the growths up string to insure 
their easy removal when required for cutting. 
Myrrus.—The Common Myrtle and other species of 
this genus all propagate easily from cuttings of half- 
ripened new shoots inserted under glass in a close frame 
during spring and summer. 
Narcissus.—At the present time these are among 
