NovemBeER 14, 1857 ieee 
eae GARDENERS’ ee 
773 
as raw 
contact with "the roots. A. P. W, Orchardleigh Park. 
et 
ON THE DEVELOPMENT OF THE FLORAL 
ORGANS aad THE PEAR, 
SPECIFIC CH AKANE BY M. J. DECAISN 
from Bulletin de i Lien Daaa de France, 
Session of A 1857. 
Ix S aen to the Siiety t the tpred et of 
the J. itier du area 
object I had in Senet 
varieties of ou 
eer 
mmediate | as t 
wa 
KS ON THE apena OF CERTAIN | Sli 
1 
ear, towards the month of Octo tober, 
it | the buds which will not be yam till the 
year, we find that they are ovoid 
the head of a little 
say, in 
ve 
is good 
+ | 
nevertheless, when 
Cc 
po ce w 
towards the centre of the bud, which indicates the line 
7 oy Bw ea 
of the cavity 
fom the ver ah J 
T have just said that at first the carpels are opt in the | 
ceptacular inclosure of which they occupy the 
a fruit is per ee a pied 
tful, and proper data are 
In studying the oe mn 
e fi 
ersed in the parenchymatous aa succulent | 
jiane oft the fruit. How then does hi investiture take 
place which seems in contradiction to what was first 
obs erved? I will endeavour to explain this in a few | 
words. 
Almost at the time when the poets, icp om rng 
m the bottom of im 1e receptacle under the form 
t 
ur, as also with distinct 
in e fruit, as conical or globular ? 18 ques- | is calle 
o d see 
ining w. e reall 
e cultivation of plants meut of omer 
new cellular “og arise upon the 
ich becomes eve 
placenta there is but a ey oe the aco, A 
instead 
of Ast 
, and at the same time more pro 
‘hat in all “the plants of this vast vers pamaos amily 
appearances, 
leaves. In m rahe quote modifi 
different groups of the 
aryop , Portulacer, &e., 
ie the reiret is well raiar in m families I have 
Just named, why should it not be so in Myrsinew and 
| Primulacew ? 
— 
oN THE ar ace OF pad TRANSPORTED 
ARINE “oe RENTS, 
BOTANISTS, struck by the facts ‘establishin the trans- 
oh of seeds by 
ter must have p pate t a hen part in the diffusion of 
form isolated 
the 
ms nies upo 
correspo n ure, remain alw: 
Species. Th 
mination, we reproducti 
generation 
in KE and of t 
ney me 
conceive indeed t k natara; istery in general, 
havi ats; pi oF observa- 
| after hav so long science 
s K ora 
not exclusively m uos A is also 
See nd Dr. J. D. E 
t we 
. shite wwii th these 
F disco in Dahur 
| poma, remarkable for the curious sevietore of ‘its fruit, | in th 
I which in the Jardin des Plantes resumed in a few 
| the normal f 
rk- 
e of these pet forms, taken 
: frequently for distinct p i: Z ati 
mention, 
} at least in a great 
cust NG It is roe soma itself then which is re | spec’ 
tra ap vg for the sean | 
or | on 
pen We 
e easily, even in ne fait, this aiiona tiss ssue ; 
is what is called t of th 
situnted within ee he inelosare marked out by t the gritty | 
bodies which ¢ rise the fruit. I need 
is lengthened 
height as well as 
vol sir cele and piad far beyond the 
ns originai 
se are ‘ik t the orf changes which take place 
wer or in the 
a dee 
very young fruit. T 
ess worthy of er arnan and with- 
the fruit would remain incomplete. 
that the erga Boao er early or 
ion 
called the receptacle of 
and 
sander 
umber of 
of the e peice which we have 
the fi which is 
of which a ts 
is point, it would 
e examination of aus 
c M. 
eaves, they hese never been 
I myself understood, it will be a 
r |nised that ea structure of the oyary in the Pear 
the ovaries z re Pani mi 
| that i it is A ie aa E eg plan 
I go furthe ess I “a mysel, it is 
not impossible o aang Fg the common law of i 
with 
rst appearance, and I b vo thes 
of the development of Pps different end 
contains has escaped me. My observ: 
‘sy be rate verified. 
young flower buds of the 
a ae aeni Chron. 1857, p. 563. 
of placentation, aie find that which 
oup o 
e bottom tere two cells of the ovary at the 
tise o ella. Fro 
thence y the ae Be ovary with a free cen 
digas Rumphia, in which 
his family. 
I published in 1834 the analysis of 
here is|h 
or qui Nelumbium 
ay elongates, 
tary ed upper | of seeds taken 
of | w 
-{able circumstan 
t ae oo PPO, Eryngium imum, 
m macroc lepias 
(Astronia and | 
"em impie 7 Sirag the plac hes are Atostéd at 
tral at the end of this peri 
Ji 
25 
B 
25 
a 
pele = 
s 
feo] 
Ea 
floa for a long time at 
of the @ sen, still rain their germinative 
faculty. 
To settle this — experimentally, the author 
selected of which the germination 
their volume and the impermeability of their envelopes; 
bo lo should have Roca chance of germinating if 
fell upon a sa an 
98 tee 5 floated, -o 39 were specifically 
n the one of t a iterranean, the 
ette is 1°02 Four seeds 
equal to that of malt ries 2d these ang 
perian, Datura Ap ramo Ji 
Gingko biloba. , of a carik n number 
n by chance, we md say that two-thirds 
y the action of sea water upon floating 2 
the e endeavoured to place them in the sam 
itions to which they would be aroe 
1e surface of the sea. 
he ones pinch 
The lid was then soldered on, and the walls 
of the boir iok with small holes, through which the 
water wi 
The vie n us was e S aare z ws at fix. entrance 
to the harbour of Cette. By th 
the buoy, the box w 
To 
y sowed in pots of t 
frames. Only 35 germinated, an 
be deducted, hide piran heavier 
= have floated at the surface; 5 this ‘reduces to 18 the 
mber o 
whic 
capable of germiináting ies og oe in the most favour- 
es. These —Cakile maritima, 
Nelumbium spec ition Linum pe Paliurus 
mariti 
eeks being a agi short time compared with 
that pro some seeds must y in their v 
m one continent to pe the epe resolved to 
e buoy on the 
rih June, De, and Dee attached. to it until the 
8th September, that is to say, 93 days, or three months. 
riod, 11 seeds were rotten 
remai 23 were sowed Pts nn i 
Gay iis. shone thom Vou moet be 
