49 
which are represented in the Mino parcel.” The pena s MESE as 
“a tree 10-25 feet high, yields a milky juice; flowers w 
It may be added that Dr. Stapf regards Holarrhena ey Kl., and 
H. tettensis, Kl, both from East Africa, as forms of H. febrifuga. 
DV.—NATURAL SUGAR IN TOBACCO. 
The following papers record the solution of an interesting Proble 
which was submitted to patti some years ago by the Treasury. Its 
primary importance wa ely fiscal, but its jene onn led to the 
discovery of some striking Jaen which do not appear to have been 
published since. 
The * standard authorities " at the time were not prepared to admit 
*the presence in tobacco of more than a trace of saccharine matter.” 
On the other hand experiments made at Somerset House ** with tobacco 
grown at Kew " showed “a considerable amount of sugar to be present ” 
naturally. E 
Professor Church was so good - to examine the MÀ and it 
appeared, at least as far as "ferm acco was ed, to 
x sed confirm the standard atloritid ies. 
ecame clear that the question could only be solved by further 
investigation, and Dr. Hugo Miiller, F.R.S., who is an acknowledged 
authority on the chemistry of the carbo- -hydrates, was so good as to 
undertake it. 
__ The results, as far as the fiscal question was concerned, were abso- 
lutely conclusive. From a scientific point of view they were not less 
valuabl 
found to contain as as 15°2 per cent. of saccharine matter. The 
sun-dried leaves of Nicotiana Taba w contained 
6-2 per cent., and those of a form of the same species grown at Ewe 
Railway Station as much as 9 per cent., * the largest quantity found in 
the leaves of plants grown in this country.” 
to the nature of this sugar, Dr. Hugo Müller was led * to the 
sugar-like er mennie which, so far ,as my present knowledge goes, 
I must consider as new to chemistr ry 
Treasury TO Royai GARDENS, Kew. 
Treasury, S.W., August 7th, 1883. 
DEAR eR Joseen HOOKE 
HAT difficult question of botanical chemistry has arisen 
in pe actical Form, in connexion with the tobacco duties, upon which 
d 
than cigars) is 4s. 4d., except in the case of “ sweetened " Sabato, which 
i i e are 
ed. It is 
importation of * Sdiri " duties that the present difficulty has 
ri 
U 90781. : B 
Mo. Bot. Garden, 
