Ars 18, 1857.1 
THE GARDENERS’ 
CHRONICLE. 
23 
T mane 
> sulphur (exeept in the 
its great 
Any on 
presence by peii Saaba si 
ial sublimed sulphur with het. aater, and testing 
oe 6 direct i 
t| F E 
Buist, and on geen my letter pi wrote forme at once 
To have 
I knew a wep gore to offer 15s. per week, with board 
and lod I often eh 8 
ter we get 
rson’s note to o Air, 
ould three situations the first day 
ne 
I arrived in Philadelphia 5 ; it has beeome one of the 
AE 
g: 
ng, and t 
logy ; the greatest citizens patronise 
comfo ome sit 
T 
ji set 
with m 
ommences nurser, 
ere All Priestly ‘while 
e leaves were exsldaed, all the tubers 
ee sou 
. Ina second series of experiments aa 3s of soil 
ot 
disea: 
a thin iiki. “The aaa which aoe 
ing of rae layers of cells, remained s 
4. Ina 
except chat the leaves 
Lewes g TF old tubers at the end of thre 
stil 
o were 
were kept quite roy both ~ 
e weeks w 
5. aes 
12 of which were 
while 12 were 
All arg carefally 6 en 
ces of Po 
following two 
clear it'up. tat a pure 
finta hi 
of people | 
GENRA aikai 
ho t dstihiie Si 
namennenivgiats if ineffectual, the aere rena phur is due 
purities removed 
macy. 
pope prepared is me from 
fine 
gas. It would 
ved as sh ‘whether it is sulphuric or 
urous acid a beneficial influence in 
parsing | e > mildew, until the above questions Te 
been dec It is ~pro Feces ver, that, if the 
or cine affinity 
il i Em a 
‘m 
or water, if 
In vers 
“ean 
established it will lead, i si A point of view, 
t reacts in in the np of sulphu 
le, Darlington 
dens, Green Hill, Phi —The follow- 
ing is A of a letter received from a young man who 
3 oO 
> 
yore. ote 
ones, and I ghoul 
At th 
as «bonne 
4s. a. „and could 
‘there is no 
ica 
meh pn ‘2d. Apply wr een 
been found ‘inert, it is | 
pe 
| aces: the well known fungu 
es | ness 
Societies. 
re a 
LINNEAN, pam 7.—Prof. ‘Bell, President, *in 
chair, Cc 
| following papers were read :— 
ressed to the Pres dent, by Dr. 
s change in the colour of! the hair 
reen’ Ebon 
her Majesty’s Governmen 
round rulers for ‘the use of the army in the! paa — ey 
it 
was stated, Prapa tnt art this purpose. man’s 
hair'and that of his eee naturally ofa light'chesnut 
colour, pivara ee towards th 
pe n an 
x Itis rama ne that 
into ‘the me a parene 
bourhood of ‘the 
| brown reo and to decompo 
| took six old thiek-skinned perfectly sound 
on at = Ae 
mi nor ating ‘spores 
orth threads into the 
he wc 
er series of e ducted in 
aer, 12 partiy y young, partly old 
ery care washed. A 
d 
str > in -a as appea' 
e Sea pores 5 end a 
t parenchym. 
these were mere 
eyer in eee I had induced ‘disease 
by means of mA di ara and whieh’ I had 
refully kept a ed in a moist ‘cool ji plaeo, a a 
white nnen at length burst forth in little heaps, which 
Fusisporiwm Solani. The experiments whieh 
ons on the oe i 
Family,” by R. Knox, Esq., M. 
Food of some Fresh-water F po more partienlarly ‘the 
a femora and the ‘Trout of ‘the Salmonidee,” by W. | 
Baird, Esq., M: i 
gors- Cause of the Potato Murra, ascertained 
es of Experiments a Dr. 
tath roscopical 
seased Potatoes in the airman of 1855, Im 
ungi o; 
From 
3 Spencer 
ean of 
apear 
the destruction of Pota 
ual. observation suggested 
being the sole cause 
rmation of this 
notion I undertoo ries of experiments which I 
shall detail under the irr eale heads, and which 
as I believe sho clearly how and Penaateg the 
| tubers at least o ig ira become and 
Sint clusion ve eaten orm of the eo 
. Four garden pots were filled with loose soil, rich 
to donne were placed 
ung. thin-skinned Pope ctl 
peet with every 
pieces, with. ove ETTR 
+ From Botanische Zeitung, Feb. 20, 1867. 
it This is merely another name 
e | be, an 
for Botrytis infestans of RP; 
eart bb OL 
tn 
year p mae ai pan with 
the Potato shi proue the well known 
devastatriz. 
Fr _ these experiments, ee ate aaa are easy of 
tion, and to the g ge ee d further proof of whieh I I 
invite attention, the following inferences are clearly 
deducible. 
1. That the disease-of the tubers isin the closest con- _ 
nection with that of the leaves. 
2. That the disease of the tubers is deduced from the 
Fungus of the stem and leaves from which the spores 
| reach the tubers. 
3. That this diseaseconsists of sere the 
mens 
~ [the ‘eells of pone Lor perhaps mechanically, y, pariy 
re ded their mens 
ehemical a 
destroyed 
and not the. consequence of oe disease 
4. That the, penetration fof the mycelia ean take 
-place only in tender-skinned tubers, 
— skins when’ wounded 
od 4 eae A 
i eee eit 
Aseaacn. 
inal cate ree wir o an ew 
of one and the same ~~ scoop 
if these assertions. md; an 
and as -e one will be convinced w 
pain s of - the 
iare doubt abont the» 
rain, although we have no experimental proo 
y the disease extends from“ the 
=i believe them to 
o takes the 
ue g no 
actual eause of the gens mur- 
at 
tubers to ‘the stem 
springs from 
a "Solas. ‘All the numerous phenomena and 
anu ra 
conditions, formerly so dark and enigmatical, when 
observed from this point of view mr 
shore of 
