41 
purpose has been abandoned. Brown and Morris point out clearly the 
ultimate destination of the cane-s m — 
“ The intimate connection between cane-sugar эн starch in са has 
been clearly shown of late years de several chemists. In the case of I 
tuber of the potato, the dependence of its reserve starch WBOR t 
previous existence of cane-sugar in the juices of the plant has been 
same has been done for maize by H. Lepley (Compt. dr 94 (1882), 
1033), and 23 A and by Balland (Compt. rend., 106 (1888), 1610)” 
‘Ina series of experiments which we con [nete a few years ago 
upon the ЧАГ, plavt, taken from the fields at various stages of its 
growth, we were able to satisfy ourselves that cane-sugar forms a la arge 
proportion of the sugars existing in the sap of the plant, and that this 
cane-sugar disappears pari passu with the "formation and accumulation 
of starch i = the se 
“It is divubtless in the form of cane-sugar and its products of in- 
version >> the transference of earbo-hydrates i in the grasses mainly 
takes plac 
One ward may be added in conclusion.  Cane-sugarin the sugar- 
cane, as in the beet, is, as will be seen, the derivative of starch, This 
substance is the result of the putting together under the pasmi y 
action of solar activity of the materials of carbonic acid and water, In 
the field of nature the process will be most effectively uiu on, and 
the result for the same expenditure iu eultivation must be largest where 
the suppiy of solar activity is most воров All things being equal, 
the formation of sugar as a product of solar activity Fought, in the 
tropics, to be more easily and cheaply e KS than in temperaie 
countries. 
CLXXXVIIL—TIMBER OF YORUBA-LAND. 
e Kew Bulletin for October 1890 contained an account of the 
Ж Son and Cultivation in Yoruba-land. 
he following correspondence relates to the attempts made by the 
Governor of La; agos to draw attention to the timber resources of the 
same count 
ту. T 
A note on Iroko wood AA, E a is a WE This w 
communieated to Kew by Sir Alfred Mol K.C.M.G., January 30, 
A Db with some very & T. samples which | may be seen in the Kew 
u 
COLONIAL OFFICE to ROYAL GARDENS, Kew. 
Sir, Downing Street, November 10, 1890. — 
I am directed a) vais Knutsford to transmit to you a copy of л 
Despatch from the Governor of closing a circular on the 
Lagos, en 
== =e. of the timber p the Yoruba country, and to ask you to be so 
s to advise his Lordship what steps should be taken to make the 
Tater ination known as desired by Sir opos Moloney. 
‚ &c. 
The Director, Royal Gardens, (Signed). Јонх BnawsTON, 
' Kew. 
| LU 63658. : в 
