successful Hemp culture. Hemp is one of the plants yield- 

 ing a full and quick return within the season. The summer 

 temperatures of St. Petersburg (67 F.) and of Moscow 

 (62 F.) admit yet of the cultivation of this plant. 



^ Capparis spinosa, L. 



South Europe and North Africa. A somewhat shrubby 

 and trailing plant, deserving even for the sake of its hand- 

 some flowers a place in any garden. It sustains its life in 

 the most arid deserts. The frosts of our lowlands do not 

 destroy this plant. The flower-buds and young berries 

 preserved in vinegar with some salt form the Capers of 

 commerce. Samples of Capers, prepared from plants of the 

 Botanic Garden, are placed in our Industrial Museum, 

 together with many other industrial products emanating 

 from the writer's laboratory. A closely allied and probably 

 equally useful plant, Capparis nummularia, is indigenous to 

 Northern Australia. The Caper-plant is propagated either 

 from seeds or suckers ; it is well able to withstand either 

 heat or drought. The buds after their first immersion into 

 slightly salted vinegar are strained and afterwards preserved 

 in bottles with fresh vinegar. Chemical principle : Glycosid. 



Capsicum annuum, L. 



Central America. An annual herb, which yields the Chillies 

 and thus also the material for Cayenne Pepper. Chemical 

 principle : Capsicin, an acrid soft-resinous substance. 



Capsicum baccatum, L. 



The Cherry-Capsicum. A perennial plant. From Brazil 

 brought to tropical Africa and Asia, where now other 

 Pepper- Capsicums are likewise naturalized. 



Capsicum frutescens, L. 



Tropical America. The berries of this shrubby species are 

 likewise converted into Cayenne Pepper. 



Capsicum longum, Candolle. 



Some of the hottest parts of America An annual herb, 

 also yielding Cayenne Pepper. Our summers admit of the 

 successful growth of at least the annual species of Capsicum 

 in all the lowlands. 



