New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1849-02-05
NEW-YORK TRIBUNE.
Cs.-,.,ry in 10. Relation to Agriculture.
mn .xn1srLL's FOURTH LLoIvRE.


~ ro,,,b Lecture of this Course, dehvere
ysa.v evening treated Of the ptal Pooer' Of Paw
- "a Al. suh,sapces which enter into the plant
different ssssss OF is' growth
v.-.,.hl~s ,sjd the Lecturer, have great vsfiet
., ,,cSuet,-msny Of which arc common TO all an
,.e.Har to none. TIE moro important OF these an
,,,,h should b arst considered, are Woody fiore
Com. Sugar and Starch For their Development on
t.rent Influences are rendered necensry " ar ino''
purs and certsn ten,persare-T.s p,s a ~ ~
Arst stases We may observe the mode OF .
n. ndmarv constituents. Ia the Alnona' - -
eoui<Sozs or secdobes and the ssmo :, "a -,
large number OF other plants oo'n ..Iaa,. d,hsr.
n.sf Such are termed Dcoy ean..,,'ug only Of ,be
ss' wv , 80 Sonocotyledonous We End, then
90, ,n,s are either dicstyledonous or nonocotyl
sda.su. IN their structure they posses entirely dier
en- 5s ',.,,.S in the earth In little time the cover
vS.sI~. ssedlohes breaks they begin 10 yell, and
,,sseotiy hnle germ commences growing 20 the
--~,,ns the resusciisnve power Of Water was
~.,soned vim It's efficacy In restoring 10 fell vigor
uaut plant when i,s spores are allowed &C
-. 10 r.,er Water 70 nov required TOR these seed
loe<s bot 10 must not be 81 all stssnsn, and another
,.,,s 1. uroper warmth. The heat, however must
.r,oSe-,,s for find that IN no locality does the
,,l.n, dsuand any great qusnty-whiie the same de
srse Of hest 10 not requisite every ~nsrc
/, has bsen observed BY travellers IN sieers that the
ss,r Of the sced begins % show sef in that region
:, -. ympersi,ro Of S2o Here, shout as are re-
,,,reI and from this Up 20 l0C IL found most fsTors
BE 70 tie growth OF plants The necessity for THE
,,ea degree Of temperature - one reason why plants
e. 40, Cow in the WnteT-,he hes, of the sun not
Le,Is sufficient for the purpo'e
I'M ths proofs Of mailbag, 80 md that germns.iOn
,sse. mace the reduisi,. elements being there fur
sshed for the development Of the plant The grain ia
al a,,a door OF metal heated 10 temperature of
sbor; zoe, or intermediate point between that and
100 and free current OF sir are also provided,
he A, INN ,ffatal 10
he.,y. 70 .urout These three ingredients, then,
All ,bs, /, necessary the proper growth Of the plant
There /. another point however, about which there
10 some doubt viz. The presence OF Fight IL 10 found
k.t ant. do no, thrive equally well in strong light
s,..ds soun broadcast undoubtedly do cot yield
.r,s, return when cibbled and thus covered from
sa- lght Hence tbs Or. thought IT reasonable to sup
pose id-t light s lnr'o"'t TO the termination OF The
seed
The speaker the1 went into heightened exposition
OF the farther germinsiiyc processes OF the plant If
We examine the germ alter II hss sweed little, Il u
found 10 have slightly changed It's nsure, and to have
become little sweetsh The first action of Germins
tlc- then 10 the production Of little sugar In the seed
We fad also that in this state the plant gives OF little
carbonc acid and that the evolution s accompanied by
. email degree OF heat.
Examining IL few days sfterwsrd, we fad that It
ass undergone another change and little vinegar has
been formed This acetic acid After time this is
s-own Of By the lower portion of the germ and falling
apon the ground In tbs neighbOrhoOd, forms soluble
salt known acetate Of lime. This is taken up by
the roo.s when msured, carried into the body of the
plant and there tends TO its farther nOurshment
in lew days, the germ begins TO assume new
orm-the upper portion 20 spread, and the lower 10
assume . pointed form. The latter 10 the commence
ent Of the future root These conditions Of the germ
been distinguished BY botsnsts the pluult and
he radicis-the former being the feathery portion
mich In future Is 10 appear above the ground the
after the root-Ihe green tint of the sprouting plant
. owing 10 the presence of the air becoming more
bundsnt as II appears above the ground.
Just before the leaves put FORTH entire change
axes place 10 the nature of the plant 1t no longer
uires many OF those substances which Necessary
or its primary growth and we find that carbonic acid
vaser and ammonia then supply every requisite for its
uture subsistence. Then II is that Woody Fibre be
ios 10 be produced.
This composition Of the various constituents of
snts, In their several proportions of Carbon, Hydro
co aud Oxygen. were given by DR. A. at length, but
Ray DO briefly summed up in the following tabular
orm.