140 
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, e u 
be directed to the EDITORS. The two ar t8. 
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are misdirected. 
Letters for Publication, as well аз specimens of 
plant for naming, should be addressed to the 
EDITORS, 41, Wellingto a SEM. Bowens 
Garden, Londo — ications be 
WRITTEN ON ONE DE охи” or ene ne hg pue as 
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"are and 
If desire de phe ere уе һе 
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APPOINTMENTS FOR THE ENSUING 
WEEK 
TUESDAY, MARCH S 
Roy. Hort. Soc. „: Lecture by Mr. Ed- 
ward White at 3 Eu mes the Study of a ы 
Botany and the лк еї Openings it Offe 
убы ызы 
ха деиш 26— 
e Gard. Вос. meet. 
"MARCH ru 
r Hort. Relief Fund Matinée at the Palladium. 
Wa 
nu 
AVERA "TEMPERA' the ensuing week 
ve Bing pn lc vati mia. "during the last fifty 
years at сар, 43.09. 
Gardeners’ _ ronicle Office, 41, Wellington 8: t, 
Covent rg cd Er Cn Nude CHE Матор 
ud кы a.m. Weather— 
n by Root easi i ng power of 
Nodule васфегин ће i re a in 
root aedis les of 
the 
leguminous plants was finally demon- 
strated. During this time much of. prac- 
tical importance has been discovered. The 
bacteria have been isolated and ed 
in artificial media. 
Reds are known; Jue с now mu 
Of the many 
the power of the 
associate themselves with non-leguminous 
to- bestow upon them powers 
enter habitual y into "abegolation! wi 
i isms and fo: n 
hie 
s ce ong 
ing DAD af 
nitrogen fixation occurs 
— ысы it 1а тб е ш ’ symbiotic 
гече of drawing ree nitrogen 
of the air for bem supply of nitro- 
genous food. wever, doubtful 
whether the eiiis advanced i е а ч 
these cases is as conclusive 
THE GARDENERS CHRONICLE. 
that of t 
justifies the demand more rigorous 
hall be Шипр before this 
in x 
not caused by nas radicicola, 
the bac visio руни in the nod 
of leguminous plants 
This mam uet is in disagreement with 
that reached by Prof. Bottomley and his 
co-worker, who claim in ‘the ин, М 
yeas, Alnus d us, 
m . SCAM Кашым {Ой 
eir 
‚ the more recent work of 
n must now be 
se plants 
different ; Фор notwithstanding the 
fact that Prof. Burrill has shown that 
the nodules do e contain Hay intos 
ине there. ta 
enc 
as igs ared 
Mu f some leguminous plants 
re in fact able to fix atmospheric nitro- 
gen it should not be impossible to train 
hers to do the nt rk. 
This, i d, w main object of 
rof. Burrill’s work. t 
most careful study 
ee fixing bacteria 
induce this 
of the habits кы the 
, he endeavoured 
aud à so far as they may be cesi as 
fi age content with the con- 
that symbiosis between the nitro- 
gen- аа organism апа non-leguminous 
plants is impossible. This conclusion is in 
as o" harmony with the facts discovered 
Prof. Burril with respect to what 
4m be called the catholicity of infective- 
ness of the nodule organism. 
аа Pseudomonas radiowols must 
he orms a series 
of biologics] races, each of which is capa- 
oo Homer. a restricted number of 
legum From Burrill’s re- 
Miche. y appears that. some eleven races 
y ted. Of these. 
мынг ba 
of Trifolium, Per сал 
e of these spec 
example, from Manmi R 
Alsike, Crimson Egyptian, White or Cow- 
Clover. 
Another race is 
infect species “of Sweet ү; это (Моол) 
Medicago (Alfalfa, etc.), or Trigonella. 
third race is common to no е dux 
eight genera of legumes— Vigna, Cassia, 
RB 
* Is Symbiosis Possible Between Le; Bacteria 
and Non-Legume Plants? By Thomas J. Burril and 
Бо. Hanse Bull. 202, Univ. of Illinois Exp. Station, 
{Marcu 22, Ex. 
EUM е5 Mucuna, Desmo 
а ta. 
and Gen lum, 
di 
2 four th race is 
is wn Pis Vicia, Lens 
(Lentil) and үтен rus, whereas a fifth гасе 
confines its attentions + e Soy Bean. - 
e и enjoys 4 the exclusive 
se of a sixth race of Pse onas, W 
an he Lupine and one an ey genus share 
the favours d ye ме race of the 
nodule organism. ов Pea Nut 
(Amorpha с ена ns), railing Wild 
the com. 
En оен таша, апа 
t (Robin seudacacia) have 
rod a sei of thei ‘own. 
From these facts it must be concluded 
that the conditions ЖОГА lay a id open 
to infection are highly specialised—that 
the gate by which infecting organisms 
pia the plant is ight and the way 
pl stra 
arrow. The problem men awaits solution 
s this: Can man succeed in doing what 
Nature has ‘apparently failed to accom- 
ad 1. паб eth doom and nitrogen-fixing 
ымы. themselves to 
iy as С, mit wet a symbiotic 
a result of Sich every cultivated 
» 
Е 
НР 
o0 
Sof food s 
== . 
Royal Horticultural Society’s Reli 
РЕ о одаи Gulliver їз p. 
in aid of 
War 
Source 
good p gramm 
In place ot the usu 
Flies Mr. Charla F. Higham, 1 М.Р. “will hold 
a Surpris 
Auction. 
Prizes at m. onal Potato Exhibition, 
Birningham.— rind that Messrs. 
Webb Sons ee offering £100 in prizes for 
Potatos at the National Potato: Exhibition to 
be held at з чыш November. This 
amount is to be award for the varieti 
Colonist or Express, Guardian, Goldfinder, 
Prosperity and Great Scot, £20, in five idee: , 
for each y. Six tubers of each v. 
required 
sex Cou v сш um se M years, fought a 
very stiff bos seab at the beg" 
election, dnd. R with a majority 0 
Ls on a Mir of 11 158. r. Comber is ger 
Messr rudwick, Florists, Westbourne 
Gave For Eh y he has b mem’ 
hospital for wounded soldiers, for whic кт 
toric mansion in Gladstone Park, associa "Mr 
Glads other celebrities, was us ч 
Comber has given liberally of his aa is 
knowledge to his ond district, and |] 
improved the gardens attached mu 
institutions in Will esden in many 
Back to the Land and Country-side Exhibition 
—Ап ibe a and Conference 
а 
оп mat те to land cultivation ап 
iler mises: is to be held at the Royal 
nic ens, - Regent's Park, : 
ths of July, August and Sept Cate 
s and objects of this Exhibition and ped 
ference are as follows: (1) To interest and wh 
cate the public generally in all matters be ) 
n ture Horticulture; ( 
to encourage and foster Agriculture and e 
culture, and to better the conditions on. E 
land; (3) to improve, by means of a conference, 
оа of co-operation on the à) 
to obtain new facilities for transport; ( 
