OcroBER 15, 1864] 
THE GARDENERS' CHRONICLE AND AGRICULTURAL GAZETTE. 
987 
oot red by Dr. wo mm n. It is remarkable, r W. | 
Hoo engin for its very powerfu al odour ry musk, | 
whioh 
dichoga mie, distin; p.i as andro, that in 
hich tl first, and Reti that 
ar | in which ue psi » were e first developed. 
Conrad Sprengel, who de ‘iguana it ~ » name of | 
‘causes the vigour of the adual xe 
its peculiar excellences € de effaced, to the 
ti. e, upon which the har us Fiir of the 
ystem depends, a déco, thro ugh the undue 
aw or 
n 
element, or the dimin ution and 
thers open I" dM Lago theis oir uh us 
In both sited, moreover, Nature ‘Seems to have 
In the Fig, the flowers first p 
and these generally 
ried up. 
tion for a longer or shorter interval of time ; namely, 
; which a 
artificial Fe 
a certain extent brought about by the mere process 
ng-st 
lo ed | 
cul, deeply lobed ‘and _inciso-dentate, whilst the 
advan 
pollen, d ral eb tha the pistil is 
to t before 
e | the av nt c 
mal 
by those aedes "i have been pointed out in 
In * he Troan union of individuals too 
race me, and are of lar rge size, the five large roundish 
oval sepals pale blue, becoming bright purple towards 
be cies, the ito ceùtral petals black, with a yellow 
t on the face of the two lower ones, and both s epals | 
flowers have a short thick 
o size and varied colours—: 
— render the plant a 
and petals hairy. 
blunt spur. Their ii 
orpamenital one i n its cl 
The species is a native c of the 2 ion of Western 
Thibet, at altitu des b m 14,000 8,000 feet. 
ed to have blosso [a opot Lm 
in € month OF June, p to ha xe quite died 
i 
round early in July; and is supposed to te pad bn 
p. 
i 
DR. DAUBENY ON THE DECAY OF SPECIES, = 
éd 'N THE NATURAL PROVISIONS 
THE] 
cte roxetables, such as the 
or the subsiste 
should be multiplied by 
in order to obviate the 
famines from D failure or dying out of 
m ere, in wp to that minute change of 
may be effected 
Yet 
etroetüfe aici each time bees Md 
reprint a certain m 
azure | Seems 
‘very: 
nce | Spec 
y dnpregta wn pollen is 
maj E He ima in the ordina arf va of Natu 
Cereals are only made to A e forties gollen, | 
| and in order to ‘produse this effec re completel 
M. Hooibrenk adopts an tinal ms thod for distri 
buting the fertilising 
nd a still further p e! to 
climate, 
ich & BSess, an 
vuitton | i I prophet about by the e nges 
| food, v which they have p encou! 
But i lants vances pem self-fertili- 
bee 
in the Ministerial fepéti]én the present state of the 
Fre nch Em mpire 
f, 
ting fe: dust eh gas ot 6o rn, by pass- sation it peat r to have boe TA uired for preventing the 
ing a rope alon surface of the crop at ‘the time | too hr ous toon d of the race, and hence, even in 
whea the stame: deren AS accomplish- male and female organs grow ther, 
ing in a more certain way, W s done casually | i& has been nel that the pollen of one flower 
through the influence of the me and aac insects. | should be v ed i 8 wa) tigmas 
By this 34 rivance he boas he has|of another; andi s a significan in so 
added 50 Ped ent. to the yield of whe erop, - his | much the greater eae ‘of instances, S, trees and 
method, after having een investigated by a pecial | other pa of long bata Ay and of vigorous growth 
ooit has onoured by à Beréicible 1 either ers, 
as if it was intended t 
more effectually the ey of the plant, d thus to 
t 
reven 
ion bv ‘the male pt fade. organ as S will 
Mc with all these provisions for prolonging the life 
fa species, its days, | 
it, are numbered, and the only question that 
3 hal mm n 
, 
| remains for us to consider, is, whether M dying out is 
altered e 
whieh ur. Darwin has iet € out i 
isa hids, 
for 
of tu beroia 1 roots in the ‘terrestrial species, Tad of 
tion of 
con- 
Fertilisation of Orc and in in ih on ditions of climate, ‘soil, &e., to which it " been sub- 
Di hous flowers. Je decay 
e Orchid tribe, where self-fertilisation is in |i “own organisation, The former explanation is 
most cases prevented by the very structure of the | the most obvious one, and may prove satisfactory to 
organs, and e therefore, the er cnet of|many minds, for the gradual sinking of temperature 
the species seems in a manner depen endent upon the | which has taken place i rust of the globe down 
casual t Nitik | Would eh E i. to the glacial period, and its subsequent elevation 
provided ti fth 1 s | during tha | in which we Tg suggest causes for the 
e of certain ag a and for the substitu- 
be dee 
proe S, which 1 med sufficient to 
- Thus several of , by pushing out | afford an adequate jtm a ion. Nevertheless, if these 
a tuber each year in calivahes' of the one from which effects. are exclusively due to climate, certain other 
proceed, - l in besides that of "ADV must be con- 
time along the entire length o a field in search of | cerned i in produc cing t them 
| fresh nutrimen t, nd ga fthe Wellingtonia. This 
fresh fl m the new v root. {trea e, or one very nearly alli " to it, existed gene 
M. fart}; 
ul 
Inthe case of dimor rphot ous ag tei TS 
RADIIS against, not only by the want of 
3 A 
from a 
Frie 
n inferred Mi Mr, Darwin „from fan “eliborkte series_of | 1 
invest 
ENA a ode of preventing self. ieri is 
Aa on the entire separation of the either 
ones i bred Lite ers on different “stalks f rom 
e fema! oe ous plants; or on dis- | 
ordin n. diese us species. : 
belgie however the same result is ob 
of that curious plant Welwitse 
rode 1 the “Ne reri i haige eigen the female 
ossoms —— ioa And 
Hem as sta d 
the 
| coordinate sprouts from the same axes, but the mate 
s of the stamens | to 
tained, | into his 
throughout "pa during the Miocene nt 
The Lignite of Bov racy in Devonshire is supposed 
from are to a ieg 
resent its only native habitat i dom net 
diminish m 
| have survived the glacial period, or pr 
than the t from ysterious cause 
unconnected w EA yu bis | ae nu were 
lighted last iom whilst cep Deodars did not suffer, 
Does not this fact;suggest some unexplained condition 
climate, which, operating Erin the species we a 
P lapse. of „years, has at length | reduced it t o the 
blosso from the second generation on the 
atkins, “the female i4 nes from the third generation on 
tenia! in floresce 
we fall back upon that doy law, which oun 
and su pposes 
"n Nu 
| ea Ok 
ono 
races seems to be aimed a 
Thus the analogy bets the two organic ein So ] 
n the case of this remark- 
ame m nd 
able 
lt may | be said indeed t that such ; an inference i is con: 
on, à 
ices under which d ay rey 
t! 
E 
success al 
oot 
ER been jid in "rd veh a f Apples by trans- 
0 & foreign soil ; 
both t the prx ot aration i certain definite 
eel 
ms iene ed to d e bro it a be said, 
the 
| we are unable to pron case of a tree, that 
| its life has a fixed duration, Jike that of an animal, yet) 
Yet the same remark pe zh “to inm pco trees 
of great size and vigour, as the Dracæna Draco, the 
Callitris quadrivalvis, and the us hetero 
|P hyllus, now 
formerly 
eium them 
certain 
crops, 
even with the -— liberal imply ot manure, 4 d 
expel uo of careful ê, inüy perhaps be 
s sw EA inr Bm Meow ms 
E a far distan 
Witness the sp 
TM 
oh, 
illustra 
me reason; whilst it is equally t rue of 
individual shoots, às of Mo Ve poly 
separate inserted ings 
out of species, at the 
ose epote of ration 
y^ e very 
an infinitely more distant 
as we! to the individual. 
nits erat th: h 
viral of his PA eeren 
p^ y be classed under th 
recoiying a influence of the 
pollen at; the t lime when tate of greatest 
This circumstance was pointed out long ago by 
tne 
pidoms, that Wee of climate 
Das & certain | thus restricted with 
of | i songs 
e cases, also, it is 7 
pou have aide 
in their 
Im of th 
—— — 
ted, partly to tl 
Europe, py to ea "of th emisphere, 
and ae - gie een regions ; but the 
ekili 
more wan "with thet of the Cap: f Good Hope and 
| Australia at the present time, oan with that Ne any 
| other part of the globe. The mean temperature which 
nd e the pes rkings of 
* Qalütris, Cop., found now in Algeria, in the mioc f 
two igo ne x Mos "hat which aims] ji. in Provence. X aporta. Glyptostrobus, dom id se iá 
at handi China and J Switzerland. 
we offspring the leading charac: 
teristics rt ; the 
second one, that whi ch —Heer. 
apan, formerly in tertiary rocks 
Drae»na Draco, confined to Teneri ffo. 
