_ DECEMBER 6, 1919. ] 
THE GARDENERS’ 
| Gardeners ^ Kimi 
—SATURDA Y, DEC, 6, 1919. 
1 NTENTS. 
E A le Queen Caroline... 292) Odontioda 
ом, two showy Prince 
290 
пешаш, 285; “at Plants, flowering, for 
р cd Rowe: winter decoration ... 291 
F . 285 | Plants, new or note- 
worthy 
К. mob ana ge Viburnum bitchuense ‘and 
юг 3 V. Carlesti - 285 
odis car as seedling 
explorations in Asia 5 
Ec pom a visit ч Pre-Med e Age, the as 
1 Maxime de la . 292 
. Fruit problems . + 292 | Rot in timber o of f fishing 
_ Apple Arthur Turner 292 | goo: A ee 
Gravel, the advantages of 291 Beate Chrys. . 298 
Henslow, Rev. Prof. б. 284 |. Royal Hi p 293 
Wi , War Swi ect, Pea Rose 
isoners as . 984 Society, a Seottish ... 284 
р Liverpoo 1 flower show in Trade туо 4 
| aid of charities < Behe mber ortik d 
_ Obituary— ree BREER and tele- 
Me.Kerchar, John ... 294| graphy . 283 
ж. D. Prior ... 294 | Trees and Shrubs . 287 
_ Orchid notes and 'gleanings В bon LO "A and 
. Cymbidium Argo  ... 289 .. 288 
Cymbidi Се: .. 289 week's DI the 286,287 
я LLUSTRATIONS. 
_ Apple Arthur T ek i 292 
. Cedrus atlantica репа n vt 287 
Chrysanthemum Viscoun: tess Chinda ae s . 285 
Chrysanthemum Percy At . 289 
- Erlangea tomentosa, a v pet des of . 291 
MeKerchar Jo ohn, portrait of me late . 294 
Rose Prince of Wales 28 
Lindenii var. . 290 
_ Tillandsia 
 AvERAGE MEAN TEMPERATURE for the ensuing week 
E ‘deduced from observations during the last fifty 
years_at Greenwich, 40.60, 
ACTUAL TEMPERATURE 
Der Chronicle Office, 41, Wellington Street, 
Covent Garden, Сону Wednesday, December 3, 
10 Ват. 29.9; ather —Rainy. 
radiant 
down of that 
[ех E 
posure t o light and | stored for arg ne Heg 
is exhaus con- 
ned to the rough E of the hat 5 e 
it defines the contou well as determining 
eath 
bours of a 
„ No less pene and equally Phe understood 
'he- influence of light ing the 
inus аена E repro- 
made даш 
hi part 
у responsible 
and it 
the spectrum 
grow 
analyses have been 
; of determining W 
к several 
nown а t 
the red end of 
um ... 289 
toglossum Joy ... 289 
he chief supplier of the energy c by 
is 
rus lant in 
is also know n that the control ror re- 
sides principally in the ra t the blue end 
S and experiment have often been 
discovering whether the ne 
parts of the spectrum, and particularly the 
ariii rays, play апу Sedie pone 
or constructive e life of the аш 
ede ш suppl ya an 
a an 
Mini as results of es it is 
be 
esear 
o remembered that me iitra-violef rays 
of sunlight are absorbed in large measure 
duri the р; e of light thro the 
atmosphere, so that n sunlight ri esthe 
it has a remarkably quick абади in 
developing the green colour of nc If 
даг canes ar own in the dark for a 
period—say of thirty days—they b 
as does grass oe a board. 
eed partially etiolated canes are exposed to 
sunlight they retain the r pale colour, but 
кыд са to the Bros ftans ie Mis a 
r lamp the es turn 
From other experiments it приз that 
ultraviolet «cd prie a powerful in- 
fluence e of manufacture ve p 4 ar 
eans of coloured 
by die pi АЙЕ Tf wa 
„screens some of the ultra-violet rays are ont 
off fr omi 
is reduc: normal s сү “with its co 
plement e шге cu is allowed to fall 
n the plant the sugar uction is raised 
by 3 Mie if the sunlight $ is reinforced 
by ultra-violet rays fror a cury vapour 
a h oe id epe 
is of fru 
Же, ү Е. hastened br the ШАД тауз. 
A daily exposure for 40 minut о additional 
oming more quickly ripe as 
nd larger than others which enjoye ed only 
the light of the sun. 
It 
is claimed end that ultra-violet rays 
confer additional keeping quality on fruit. 
hes and shoots cut Чы a tr 
se 
ess 
aves ‚апа 5 
seven 
ubt a its lication to 
fruit-growing and exporting industries. The 
author, recognising that mercury vapour 
lamps аг expensive for general use, is 
experimenting with the use of small carbon 
rods impregnated with vari substances— 
tungstate, uranium nitrate, ammo- 
wi all 
world as it 
he sun 
A 
BE. 
"€ 
HEE 
JERT 
Oo 
ect 
Br. 
5a 
35 
et 
3 
© 
et 
© 
= 
rationing of su 
plants would be all as “ sweet as summer.” 
* The Action of Ultra-violet rays Sugar Cane. 
Pineapple, and Banana in Hawaii. at T: Tsnji. 
Louisiana Planter and Sugar Manufacturer. LX., 
1 June 29, 1918. 
CHRONICLE. 
283 
The foliage dee in spring would be of the 
verging on black, and the 
e would pass in-the 
twinklin th. In 
pite of our eon to increase С produc- 
үй. we regret alto ogeth er that our 
osphere pes the € -— ultra- 
чым light might show 
= 
Tree Telephony and bles iui i дея trees 
s tele- 
eid w ere meb wi the 
telephone and telegraph installations con- 
nection with Ar manoeuvres in California in 
e dry season of is opinion he found 
opportunity to put to test the war when 
the United States, as a precaution against 
submarine ca int ions, was ing 
receiving verme to pick up and recei i 
messages stations. po "ted 
of ae. нито of a chain of 
across the United States, it was amen posible 
to незя signals from Euroj by 
laying a small wire netting on a 
ee and connecting i 
nna 
eceived by another tree 
01 “concludes fro from oun 
to the ts which кылы whis 
through оха 
Rot in Timber of Fishing — Тһе Fisheries 
Division of bg aps pus клин. nro and 
Fisheries reports that s e been 
wm lately of "nk in recen built ishing yog 
he. cases brought under notice the timber 
A a affected was E ish QUUM cafe 
i 
be readily o 
looked in n its ont е. апа consequently at 
ме їп to use T Pa Hed 
po 
or 
d varni not help to ar 
wood; indeed, by excluding the air, they help to 
disease and to extend it to any 
djacent. 
Ex-Service Men.—In answer to a 
of Com- 
zE 
A 
z 
B 
= 
g 
B 
B 
Е 
3 
d 
E 
d 
&, 
R 
ideration is 72,000 acres, he number of ex- 
Service men actually in occ ion of their hold- 
ings 2,614. This e will be larg 
increased: as soon as the present abnormal diffi- 
culties he ‘providing other equip- 
ment 
te ae i nd the questioner 
was ыг to the Secretary for Scotland and 
the Secretary for Ireland ectively. In 
answer to a further questio: е ‚ as land 
had bee ,000 
* By Major General ade 0. uier, Journal of th 
Franklin Institute, June, . 1919. = d, 3 
