Naturalisation in Extra-Tropical Countries. 329 



Neurachne Mitchelliana, Nees. 



The Mulga-grass. In the arid interior of Eastern and South- 

 Eastern Australia. With its companion, N. Munroi (F. v. M.) 

 eligible as a perennial fodder-grass for naturalisation in sandy or dry 

 sterile land. It endures any extent of drought, but requires heavy 

 rain to start anew [R. S. Moore], 



Nicotiaria quadrivalvis, Pursh. 



The native Tobacco of the regions on the Columbia- and Missouri- 

 River. An annual. This can be utilised for some inferior kinds of 

 tobacco. 



Nicotiana repanda, Willdenow. 



Cuba, Mexico, Texas. Annual. It is utilised for some of the 

 Havanna-tobaccoes. 



Niootiana rustica, Linne. 



Tropical America. Annual. Some exceptional sorts of East- 

 Indian tobacco, of Manilla-tobacco and of Turkey-tobacco are 

 derived from this particular species. 



Nicotiana Tabacum, Linn.* 



The ordinary Tobacco-plant of Central America. Annual. The 

 tobacco-plant delights in rich forest-soil, particularly where lime- 

 stone prevails, on account also of the potassium-compounds which 

 abound in soils of woodlands, and also because in forest-clearings 

 that atmospheric humidity prevails, which is needed for the best 

 development of the finest kinds of tobacco. Various districts, with 

 various soils, produce very different sorts of tobacco, particularly as 

 far as flavor is concerned ; and again various climatic conditions 

 will greatly affect the tobacco-plant in this respect. We can there- 

 fore not hope to produce, for instance, Manilla- or Havanna-tobacco 

 in cooler latitudes ; but we may expect to produce good sorts also 

 far south in Australia,. more or less peculiar ; or we may aspire to 

 producing in our rich and frostless forest- valleys a tobacco similar to 

 that of Kentucky, Maryland, Connecticut and Virginia. Frost is 

 detrimental to the tobacco-plant ; not only, particularly when young, 

 must it be guarded against it, but frost will also injure the ripe crop. 

 The scarcity of dew in some of the districts of Australia militates 

 against the production of the best kinds, otherwise the yield as a rule 

 is large, and the soil in many places well adapted for this culture. 

 Leaves of large size are frequently obtained, but the final preparation 

 of the leaf for the manufacturer must be effected by experienced 

 skill. The cruder kinds are obtained with ease. In 1893, the 

 colony of Victoria produced 8,952 cwt. of tobacco, New South 

 Wales 10,858, Queensland 4,577 [Hayter]. Virgin soil, with rich 

 loam, is the best for tobacco -culture, and such soil should also 



