22 Choice of Subjects 



rendered possible. Above the cemented floor a six-inch 

 bed of gravel or brick-bats should be placed. Over this 

 a good thickly cut layer of turf, set grass-side down- 

 wards, and over this the soil — loam, peat and leaf- 

 mould — or what is considered best for the plants. Of 

 this latter a foot or eighteen inches should be supplied. 

 By arranging the soil in compartments, quite a variety 

 may be accommodated in a small area. For example, 

 Primulas, such as japonica, pulverulenta, rosea, and 

 Sieboldii, Anemone Robinsoniana, Pamassia and 

 Ourisia coccinea, would be good for sandy or pasture 

 loam, as would also, if space permitted, those fine 

 foliage subjects Saxifraga peltata and Rodgersia. 

 Trilliums (Fig. 8), Cypripediums, and such Lilies as 

 canadense, superbum, and Grayi, would be happy in 

 peat and leaf soil, while Darlingtonia, Sundew and 

 Sarracenia would revel in peat and sphagnum. Pin- 

 guiculas could be strewn on the damp moss-covered 

 sandstone bordering the streamlet. The following is 

 a selection of plants suitable for the bog garden : — 



