53 
_ I had also an opportunity of examining green leaves of N. Tabacum 
var. immediately after being taken fro A ae at the Zoological 
Gardens, and at Ewell railway ee Of the former, one sample was 
taken from plants which -had rot flowered, aid it contained nearly 2 
a mere trace was detected. The sample from Ewell, however, which 
was collected iu the middle of O eben contained a little over 9 per cent., 
the largest quantity found in the leaves of plants grown in this country,- 
and it is a noteworthy fact - = 3 Taras contained also more starch 
than any of the other speci : 
- It is to be understood that all these percentages are referred to air- 
dry leaves containing from 12 to 13 per cent. of moisture, whilst the 
commercial tobaccos mentioned above contained from 13 to 15 per cent. 
It will thus be seen that the percentage of saccharine matter varied 
very largely in these specimens, and from considerations which it would 
0 
or ding additional cae that cete ine matter is a me E 
constituent of the tobacco plant, they are in no way conclusive as to the 
quantity w may under more favourable circumstances be produced 
by this piik It is more than probable that the — which, even 
hen grown in this country, produced as much as 9 per cent., may, when 
cultivated in Virginia, yield a very much larger TES and even so 
i an E as the 15 per cent. found in * Bright Virginia" seems 
now no longer surprising. 
I am informed that it is only of late years that tobaecos with a 
APT percentage of saccharine matter have made their appearance in 
commerce, when, in consequence of the fashion of cigarette smoking 
becoming more general, the great demand for the yellow sun-dried 
tobaccos induced the Virginian growers to produce a tobacco imitating 
the eee type, and should it hereafter be proved that some kinds of 
yellow ccos from certain localities invariably contain considerably 
more n it than others, we m safely conclude that this development of 
saccharine matter is a mere accidental effect of the improvement of the 
cultivation. 
rom a Pn on tobacco published at Richmond, Virginia, by 
Robert L. land, we learn how much care and attention are Tequired 
in the cultivation and curing of the yellow tobacco. Th ho 
8 
of this manufacture, it will be sufficient to state that the conditions 
observed are prec isely ae which would preclude as much as practicable 
every possibility -$ cn or the destruction of saccharine EC 
contained in the gr 
For the Vd, we are ignorant of the chemical rer p involved in 
: it mbles t 
hypothesis receives some support from the observed fact that the 
vigorously growing leaves of certain plants will show a little while after 
Although I have in the foregoing shown that a very considerable 
quantity of saccharine matter may be present in certain kinds of tobacco 
^ 
