676 THE GARDENERS’ CHRONICLE, [Ост. 22, 
is the case with they are, we should frequently | have such frosts as —— in the bast by the thick-skinned V. 
ie 2 novel 5 5 vy almat of the United pe predicted va — gentleman € vore Fhe paretéhytastóta неи le v 
i i OBERE itd ol any other country on name of “ Montur,“ aud whi viernes fr ah d abnormal 8 ао resemble thee of the 
King the globe within the same lels of lati- | occurred in 1838. dm that case we whould have to | bas p The ducts, again, are analogous to the wide 
de he seasons are frequently not congenial e a last view of our finest decas cri ted cells wht septa have reticulated pores, 
ve tation, and crops are consequently often defec-| shrubs, which now show themselves the more co n these it is that the sap of the Sycamore moves 
: onsiderable extent; at the same time it spicuously as the approa of winter renders naked | with such activity. 2 inter w 
ve to a conside d R with the exception always of Conifs 
W 
stating more Pec pe 
the numerous meteo 
8 8 
see the high position Kog this country occupies as Ati meri 
temperature, in compariso h sgh 
within the "ee — — of latitude. Lookin 
these maps, it can be perceived that o ee 
c mes ate following a certain line of tem- 
and 
regards 
| 45 we = тш: $ apan com- с 
s to 
н Асу 3 
A er 
be found on either side, east or west of it, includes 
tends 5 
Britain, and exten towards Spitzbergen. Thi 
the form of a blunt cone, ws the 
i 
tempera- 
this line is 
tolerably 
figure is indented on the Spitzbergen pa where the 
annual temperature of 32° Fah. occurs at Bear 
a d 
the po 
ven with a remarkable рай! 
coast of Scandinavia, as 
ad vun an inroad. Tha t the 
proceed in "that 
e- | temperature o 
for these кезүн have the greatest influence on the pro 
seque 
whilst we enjoy comparativ ely X winters, 
be ex ed, we gg Bll between the ] 
— 79 fibres and the layers of sap w as formal 
tinguished by the лае ‘of ordini. irregu 
larly disposed threads, a more or less br oad stratum 
it will be observed that in the thre onths in | arrangemen similarity o 
ch the growth and maturation of rohe are which diminish gradually as they are more distinet 
chiefly effected, namely, June, Ju d August, fro the wood. t is this layer which 
the temperature is, on the average, little above that given rise to the notion of a zone of renovation, 
which is due to the latitude ; and in seasons that | which survives the winter ; tree from the de . 
prove indifferent, or bad, we have in these months of the cellular REN ae it is very difficult to get 
a temperature even lower than that of the generality | clean sections HARTIG ee convinced hii 
of places on the same parallels. Crops f fruit and кү this is пор тоге Chan the e incomplete tissue 
grain are then defective, and the latter are not f the bast in which the morphosis into paren- 
adequate for the 
fi gan a greater importation becomes necessary 
rtunate circu nce be remarked, 
A fort 
г which i is, that w 
peel they are, on the contrary, warm in North 
Having exhibited the pe of the climate in a 
h m that in which it has 
crops to perfection. Again, 
months may he mild day and night, so as to produce 
er these circum- 
higher r бешен їп Ше day an 1 r one at 
night. the maxima tempera of the 
days become the most E consideration, It|à 
is well fruits may grow in dull, warm 
mp weather, but in sueh they . — acquire their 
fore direct ре attention to the 
f the three months abo Vi melitionad: 
more important crops, and con ently form the 
t criterion, 1 one which ray м» s = ipe аныш 
tion, to a considerable extent, the e of sun- 
heat: a high daily temperature being e Жы 
. has not yet ta 
If this 
carries its heating influence so far, it is that 
the British Isles, which lie i in its track, and are 
situated so nearer its source, must at derive from 
it a much higher temperature than they would other- 
wise possess 
. — extent to which the climate of the British 
in conseq of their pomier 
ation e 
e mean temperature 
ae — of a number of A and, using 
* the mean of these thirty-six p 
I cal call, i in чету ола normal 
temperature, 1. ; 
which it would have everywhere, if its actual, det Th 
variously distri were uniformly 
istributed.” Now, we find that the; 
British Isles, from this normal tem- 
Excess of temperature in the British Isles, above the 
average temperature of other places on the same 
hd De Bello Gallico, v. 12. 
IN a former article we explained as bri efly as 
possible the views entertained by Hartie of the 
structure of the stem of Dicotyledons, with a view 
to the better understanding of his notions as to their 
mode of in ae in — 
inclosed between 
агу rays ure one-year shoots a circu 
ine is Sulis: уч, ble, which Жарымы the 
2 7 from -— pum In win 
der-walled 
ost 
“Six | thick-walled 
ta 
latter are pane ated on the s is 
nearest to = ther ] 8 this distinction 
re 
annu s can only be distinguished by the 
alternation of these dace and flat fibres, The 
td aeg the hu in orat — divided ed into vef там by 
contai 
per y ed in 
many to 
‘organs | ay pt se matter of doubt, i 
-| absolutely the case with wi 
ter the limits cannot зә а 
p of the trun 
e 
nd. of bark where the surface of the 
ve of the vascular fibres 
n pla 
be sk just when active growth is 
commencing, having first applied sulphuric acid re- 
normal strength, it will be 
are but 
. ike the S 
opposite directions the sterile daughter-cells af 
tle radii of the wood and bast by division, while 
from time to time a division in the direction of the 
i kes place, increasing number of the 
TuécoL though in 
pa alpably rt. жүз ы 
An ingenious mode of ени 1110 to duet 
has been "devised as fo lows :— disc бет 
point representing the juncture of wood pas 
f each of the ане is H the fluid, 
res repre- 
ent the two permanent mothe “If air be 
now blown into the tubes, a double stream of bubbles 
centre, the 
further partition. 
produces two new i 
|| betw een each inflation represents the winter rest, and 
ring of wood and b 
the green bak continu; active to the most 
e al de E. 
e of t 
cells of he radial t 
walled cells of the bas 
scio i 
and in this the 
llary rays of 1 
similar, t 
еу W modificato of 
Bn 
the 
ү 
[We are indebted. for —.— yim ms 
|communication to a gen 
There 
“The * He iie iron appear to doubt 
e in its solid state is not a 
i the voi, y 
„about which there appears to 2 een 
| na hatev 
o whatever. 
| Long absence from one’s native country 
