485 New Patenis lately enrolled. 
To doubt, if mirth with sanctity can dwell. 
r wit with candour in one breast excel ; 
if eer the world one self-same hand cbuleste® 
To give, expanded, from profusion free ; 
Tf zeai for truth, indignant at deceit 
Can yet with charity in union meee 
If warm deévotidn bigotry can shun, 
And pious faith one- course with reason run— 
[July 1, 
If such thy doubts—=then haste thy steps to 
3) a OUR : 
Where Sheen sits weeping o’er her: pastor’s 
urn: 
There ask, ofall thou meet’st, at every door, 
What WAREKIELD was—and be in doubt no 
more! 
Bak, 
NEW PATEN TS LATELY EN ROLL ED, 
=e 
MR, JOHN BRIERLEY’S (GREENFIELD, 
FLINTSHIRE,) for a new Mode of set- 
ting Blue Lead for corroding the same 
into White Lead. . 
HIS method, by means of a bed of 
dung or bark, into which are in- 
serted _pots filled with acid; over these 
are placed boards having holes bored in 
them to acdimit the vapour of the acid 
round the rolls of lead. On these ano- 
ther bed of dung or bark is placed, and 
the.process repeated before, forms a 5e- 
cond bed; these beds may be repeated 
to any practicable extent, and are de- 
nominated a stack. There is a chimney 
or flue running through all the beds, for 
the purpose of distributing the vapour of 
the acid equally through them all, for 
which purpose that, part of the flue, LB 
extends from,the one bed of dung or 
bark tothe other, is left with small in- 
terstices between. the bricks, so as to 
communicate any superfluous vapours 
above or below, or carry off to the other’ 
bed any vapour ‘which may be to spare in 
that bed. 
°‘Ehe observations of the patentee refer 
4. To the number of pots, and the dif- 
ference as to the expense of them.— 
2. Yo the health of the manufacturers.— 
3, ‘To expenses of the annual breakage. 
* With respect to the Ist.—-According to 
the above plan, a bed may be set with 
280 pots of equal effect with a bed, which, 
according to the old mode, would, require 
560 pots, making a Litas of one 
half. The pots used in the plan cost 2d. 
each ; those in the old method Sd. each. 
_ So that 260 pots at 2d. each.will cost I. 
6s. 8d. and 560 pots at 5d. will cost 111. 
13s. 4d. leaving a difference in favour of 
the plan of 91. Gs. 8d. for each bed. 
New ifa stack consists of seven beds, 
and the manufacturer raises nine stacks, 
the gross ‘amoant of the saving, in the 
first instance, will be 5881. According 
to this plan the manufacturer can set 
three tons of lead in a bed, when in the 
éid way he can only set about 1 ton 12. 
cwt.; and: the corrosion is more certain, 
from the fumes of the acid having free 
access to all the lead, which is placed 
upon, the boards, instead of the rolls be- 
hig confined separately in the pots along 
with the acid; that the pots, which are 
placed under ‘the joints of the stack- 
boards, will be filled with hquor or acid 
neutralized by being mixed with the ouze 
in the bark, and the fumes arising there- 
from being condensed, the pots become 
filled, aud the necessary corrosion is 
therefore prevented. From this mode of 
setting lead, the manufacturer will ob- 
tain a third more of white lead than ac- 
Cording to the old way. 
Qdly. The plan clearly demonstrates, 
that the rolls of lead being placed upon 
boards .are €asily taken’on when’ cor- 
roded. When the are Yre~ 
moved, fhe rolls should be well sprimkled 
with a wateting-cai, which will prevent 
the dust from r isME ap d annoy! ag the 
labourers. Now, according te the old 
way, if the lead is w aie) corrodec d, the ex 
pansion becomes so great:.as to 8 .the 
pots tight.and close, ee the Jabourer,,in 
order to disengage the ceruse from the 
pet, is obliged to knock it upon’ the 
takiny-off boxes, which causes a danger- 
ous dust to arise, that-affeéts the labourer 
with that most dreadful disorder, the 
colic of minerals. 7 
-Sdly. “The ‘breakage of the pots, “AC 
cording to this plan, is notas 1 pot to 30 
it comparison ‘of the breakage arising 
from the’ mode of setting. For experi- 
ence tells us, that in the old way, we may 
éxpect a loss of 30 pots in 560, and of 
course in a stack 210 pots, and in 9 
stacks 1890 pots. Supposing the manu- 
factarer to take up and set four rounds of 
stacks in one year, the number ef pots 
broken will be 7560, which, at 5d. each 
pot, amounts to 1571. 10s. These nine 
stacks of pots in the old way would cost 
7351.5 according to the new plan only 
1471. ” leaving a difference of 588l. as 
stated under the 1st head of observations. 
: Exclusive 
stack be ores tis 
