New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1849-02-05

This proportion OF Woody Fibre said the Dr. depends
altogether upon the leaf tie constituents Indicate
shove 80 twelve parts OF Carbon eight of Hydrogen and
eight Of Oxysen-or the latter two may be termed
eight atoms Of Water. That woody fibre IL formed In
the leaf evident from the fact that the sap which rises
In the oty OF the plant does not contain trace oft
but ~ the passes up and approaches the leaves
reaching brat their lower portions and then the upper
becomes changed in character and receives from the
tonsa OF the Leaf Whist they have taken In from the At
mosphere. lift formed IN the body of the tree il
should be deposited in the center as I, comes up.
When the Woody Fibre 10 produced, the other sub
1Ar as begin 20 be formed. Of these OF the moot
prominent but mo-. most Important IL Starch. Starch
aa,rs very itlle from woody FIBRE and If We
derisnd the principle OF the formation of the latter
,an Of the former Looking At the constitution o.
Starch We find see Table sbovel that l, has the same
amount of Carbon, bat little more ofhe constituents
VI Wster-viz: hydrogen and Oxygen
Starch 10 deposited in the ssue OF the body OF plants
= In the stem. This Is the remarkably In the As
pen and the Pine sbundanty that In OF fam
Inc 10 sweden the inhabitants have been able, by rasp
ing certain trees, TO obtain sufficient nutrmen, from
them 10 sustain human life for short time. The same
IL tho case In the Palms the Ssgo Palm particularly
where the ssso 10 thus deposited la other plants,
Starch IL deposited not In the stem, but in their roots
The GiHser IL an example Of thisAgsn, as in the Pc
tao, deposited IN the ubors and IN others s,
remains Ia the body Of the plant Itself 10 assist In is
ful development In the rots.c the grains Of Starch
are found Of an oPucal form but IN other plants they
sssuuio globuar shape
The discovery Of the properties of Starch well NJ
the explanation OF lie insoubility in cold water s due
10 ~ hssps He found that each oil the grams 10 en-
slcsed In q tough n,egument, upon which cold water
has no effect but when boiled together the little era
pales swen. burst the enclosing membrane, and the
substance Of the starch uni,es once with the water
forming tie solution well known The covering being
hgh. hoa.s the surface and FERNS the scum So Ia
rclsr TO ell.
tthese said the DR. there are many varieties
all possessing however two peculiar properties oil dis
solving In water and Of insoiu5ity in spirits Of vine
s constituents see Tablet much the same a. tne
substances already treated.
sHSav-Farthcr in the vegetatiye power ot the
tree, continued tie Dr.. ~ the production of sugar
lite formation Ia early period of the life of the plant
hss already been mentioned As csueed by the ierment
alton Of little gluten la the seed Bu; here 1t is pro
daced differently. IL 10 formed naturally by the sctOn
Of the lesves-snd may be- artihcisy, by treating
luton OF Ordinary starch with little Of. 81 yi,rol
When the plant begins 10 aower another chsngeis found
to occur, and j. 10 observed that csrbOnc acid u
taken In but Oxygen Is tsA from the atmosphere 10
very great amount Hence the should be eX-
trsc;ed from such plants the Maple and the Sugar
Gaze, before this period 10 attained.
Tho Dr. went 10 heightened delinea alton Of
o:aor properties OF trees In producing fruits etc and
~ their formation OF various acids Fruits he consd
e'ed nothing more thsn the leaf expanded and
eo2ing the seeds Of the plant In heshy pulp (Which
70 roihns but starch at hrsf)-instesd OF the horny
shel with which other trees invest their products
Every family OF plants he observed farther las lite
peculiar Acid charReterizng ii-ss the Msc. In the
Apple the Tsr,src, in the Grape, sc. The latter
which 10 the Gauss OF the taste in cresm tartar
Is found on examination chemically to consist OF four
psrts Carbon, two of Hydrogen. and five OF Oxygen.
siluents OF plants. with their chemical combination
,; Nitrogen, in come instances and by the following
Table prepared for the purpote showed their several
parts 70 DC ESSENTIALLY Tie same viz