740 
THE GARDENERS’ 
e AND AGRICULTUR. 
Dr. statement that arsenie must be re- 
garded as an exception. 
* Knowing that sulphuric acid contai 
> so ir Ara pike in v dun 
Davy’s 
ning arsen 
iui tk 
hey n 
sub 
such 
the 
iat they “detain in thei 
* 4th, pa t arsenic may 
dail lv p^ i; 
till Ln 8 
s this reall Is dad e no error in 
hi 
in e resu 
It is known, indeed, t 
- the smelting houses 
although che atmosphere is sai 
at 8 888 remain healthy 
id to be contaminated 
AL GAZETTE. (Serum to m 
white flowers has been 
a gardener at Mean 3 obtained by M. ns 
E 
happened a 
SP 
and grubs attacking ff 
preparation of o uw 
mixes a few ke les ot 
water, adding som m E 2 Ao. 
ulsion, „ 
a pre hina experim 
N ded the power of takin when it 
ton ps 9 ous acid; 
continued for more than a Week v 
had grown to 
rt 2 see, — ng 
sub: s tance to 
— 
gm (at 
mal li fo, hed à 
ininrions 
-|the dose of arsenic par: failed to 
Yet 
subject; on the other hand, 
orded the 
been pee he perishes round the 
it is certain d es etation 
rks nwall. 
lo; and it did them 
r. Davy wat 
viene aqueous a os 
no Therefore i 
uteness o 
arm. 
1 n 
injurious effect. we have the Mni of 
others that yore small doses are fatal to 
ound that when the s 
| peris 
with an — solution, killed 
or CARRADORI e e 
Other 
i: his — Š gye with a satu- bee 
f Fo 
the trees by a garden engin 
A M. Gar 
not a appa arently — 5 any 
effe Se" — those plants 
To this very unexpected result we shall advert | 
wt a later period 
Y found — t 
thus obtained was 
present even in the s 
arsenic had been freel 
portion of the plants pio imbib d the e poi 
ic proeeeds to relate the — of ba er 
tion ^ 
tions, 
existed in ferent ethen manures (k. as s 
s the b ced. There isa case 
of 15 kind nee in Papen inest 
0, p. 488), e Vetches were treated with 
nii Aem 8, ge as is asserted, with some 
advantage! (See Decandolle e's Phyniologio —— 
last mentioned cases 
The may be analog 
at the iei cd nen -made reprobate Ys of ‘ime 
b 
des our diffieulty lies in 
should be poss sible for Peas 
* saturated aqueous i, polation” — a ed by 
ee and we cannot but think that som 
explanation ment a found that would be ‘tins 
sistent with the rience of others. 
Still remains the aber alarming fact that food 
erops raised with manure containing minute y ses 
2 hosphate), would in like mann 
x: Am plants growing where those — s bad 
3 To determine this, I tr ize ted, 
etly, 
indirectly, when 
vegetables become the food o 
This seems 
f erphosph 
mould, sap 27 E £ gardon rather xd demanding — immediate and rigorous 
to recover the trans and when it ——— examination, 
arsenic, 
WE collect anew from the 
3 such small items as only require a passing 
sence a be aber “though ibis a very small 
amount of Cabbag vi ; 113 grains, ay used | o 
This result w. 
e Paris CUM Society has bee 
short — = i^ real velub 
d 
M. WILLEMOT 
of certain insect- killi ing a 
e 
-— 
w 
of arsenic may both dire ectly and indirectly cause | Ë 
dire 
as s when vegetables are teien into the stomach Th 
animals th dein such Re 
to be a Tuer eser —let us 4 
2 
French Hortieultural 
amid 
straight handle 5 
bark on the side n 
had a d d 
pe — s e — power possessed by not receive a medal Who 
me plants, at least, of taking up arsenic from | in acknowled f has ivl curved Istri” 
manures containi that substance. As in this Pyrethrums at x 1 1245 rags pan ie 9 hook, bat but briad and flat, 2 
experiment I was aware that I had. placed the | Caucasu: Levant, was in Scans lace at right an gle es to the shank 
plant in a most favourable condition for absorbing | very pro — didi that such - introduction | hooked, This he found an d 
e poison, and that a larger proportion of super- | did not pesi such a reward ; and secondly, that | strument. 
phosphate had been employed than was used in | his powder did not Ae green “fly as was inital —— Bea 
practice, my last experiments were to ascertain if | The President, id that if the powder Japonica it i 
E Res ii EN could be detected in our was properly polio i insects dropped no doubt, | count or hen 
83 s with superphosphate in the ordinary — —.— — time 2 8 are AL LLEMOT kan of pu ius t thi 
shied wi is and rejoined and undrained. 
wein Ex. that his powder did kill insect, A even as the great importance 
we the most unmistakea f hatin redo (Selandria them for a 
The E: EN main- | Indigo for 
Dr Davy “to have some ause the aphides ticularly valuable for 
though the qt tre lively when put into a flowers may be u 
= Arredo TC that they | are us in ot 
bcm which is t added to the soil m ished of Hunger; | — remarkable is, 
small, still plants E y dug t their Ris es as 2 ascribed to m ; be reasonably and s y the ; ate 5 
the case of the alkaline and earthy salts, t. take u | have been fec t ed P ight yielding this e (o 16) 
E iai ind quantity of this substance, thog | mere ier ecte shaw ts as well by springing with t e Rev. Hort, 1859, No. 19. 
s proportion in the soil may be m : : an upon this remarked 
Further, as arsenic is well known to be i pss than y a of more use in killing groen-flios DE 2 9 V 
mulative poison, by the continued use of vegetables roposed; o powders that had ever been Neorg was 
containing even a minute proportion of arsenic e ed the instance of a tame 12 wed Thomas ceous plant 
that substance may collect i ie which a friend of his had once -f Veitch d 
with a tiful fal foliage, & 
so |! 
3 an inj ious effect on he garden. Another member extolled th at the SE cuts. aral Society’ 
tonl and animals, r further par- | syringing with ld e virtues of à iay? It B L7 like 
Ex iu Me London Dublin and Edinburgh 8 | third observed that 10 age een A stalks the leaves are 2 
tole fon Magazine, in which the original paper is dissolved in a quart of water wholly petes ipe sightly trated with pur ri 
ihai | green-fly after twice gin tr So git lo on the under 
a will Il hardly b. be denied. They lend t à the À pies 8 — of — 7 that tobaeco aid — remit border ta "7 
ollowi en iful example 3 
ng Uam t roe ces:—1st, that plants, sticking to t trees, at least for -— "rbi and aa E dover there 
is a Caladium 
MERE , are not 1 
in the soil ; 2d, that they absor a d 2 
eturn of the insects. 
revented ere 
It appears that a Dielytra spectabilis with ! 
necessary to it, x we 
which is here given. 
