TOBACCO. 591 



3. JV. fruticosa, or shrubby tobacco, an ornamental evergreen shrub, native 

 of China, with pink blossoms, which grows to about throe feet. 



4. N. undulata, or suaveolens, sweet-scented or New Holland tobacco, a 

 green house perennial, native of New South Wales, with white flowers, which 

 is only two feet high. 



5. AT. rustica. The common green or English tobacco, an annual plant, 

 native of America, producing white flowers, which seldom grows higher than 

 three feet. 



6. N. paniculatn, or panicled tobacco, an annual plant bearing greenish 

 yellow flowers, native of Peru, rises to the height of three feet. 



7. N. (jlutinosa, or clammy-leaved tobacco, also an annual plant, native of 

 Peru, growing to the height of four feet, with bright scarlet flowers. 



8. N. plutnbag i uifolia, or curled-leaved tobacco, an ornamental deciduous 

 annual, native or America, with white blossoms, rising to the height of 

 two feet. 



9. N. pusilla, or primrose-leaved tobacco, an ornamental deciduous biennial, 

 with white flowers, native of Vera Cruz, rising to throe feet. 



10. JV. quadrivalvis, four-valved, or Missouri tobacco, an ornamental annual, 

 native of North America, with white flowers, seldom growing higher than two 

 feet. 



11. N. nana, or rocky mount tobacco, a curious greenhouse annual, native 

 of North America, with white blossoms, rising only three inches high. 



12. JV. Langsdorffii, or LangsdorfTs tobacco, an ornamental annual, with 

 greenish yellow flowers, native of Chili, reaching five feet high. 



13. N, cerinthoides, or honey- wort tobacco, an ornamental annual, with 

 greenish yellow flowers, native country unknown. 



] \. N. repanda, or Havanna tobacco, an annual with white flowers, native 

 of Cuba, rising two feet high. 



There are a few species, natives of the Province of Buenos Ayres, which 

 may be particularised. N. bonariensis, having white flowers ; N. glauca, yellow- 

 ish green flowers ; A. longiflora, white flowers ; and N. viscosa, pink flowers. 



The important mineral substances presented in Havanna 

 tobacco, examined by Hertung, are in 100 parts of ashes, 



Salts of potash 34'15 



Salts of lime 51-38 



Magnesia 4'09 



Phosphates 9'04 



These substances were for the most part insoluble in earth, and 

 must have been dissolved during the growth of the crop. 



ANALYSIS OF FIVE SAMPLES OF TOBACCO. 



No. 1. No. 2. No. 3. No. 4. No. 5. 



100- 100' 100- 100- 100- 



Prom the above it will be seen that on the argillaceous soil 

 the tobacco contained a large quantity of alkalies and silica, 

 while on the other hand, the lime, magnesia and chlorides were 

 high in proportion, in the tobacco grown on calcareous soil. 



