MR. GREEN’S SUCCESS IN BALLOONING. 
607 
you that the presumed difficulty of grinding 
and dressing simultaneously is in this new 
machine completely obviated ? — Yes. 
9. Do you consider that the skill and super- 
intendence of a regular miller is in this new 
machine at all necessary ? — No. 
10. Do you consider that the machine works 
as perfectly now as when first erected ? — Yes. 
The answer to the 9th question appears to 
us to be one of considerable importance, as 
relates to the economical working of the ma- 
chine, especially in a workhouse ; for inall 
other mills that we are informed of, the ex- 
pense of a professed miller to superintend their 
operations is entailed upon the establishment. 
This is, indeed, unavoidable with the ordinary 
stone-mills, as their surfaces require frequent 
dressing or re-cutting, at least once a week 
when constantly in use. Besides the stop- 
page or loss thus occasioned of one day in 
every week, it i-equires great practical skill 
(at necessarily high wages) to execute such 
work in an efficient manner. The wear and 
tear of tools and machinery is also consider- 
able ; the repairs amounting in the mill 
worked at Giltspur-street Compter to 20L 
a year , and this is in addition to a miller and 
two assistants. 
It has heretofore been deemed impractica- 
ble to grind and dress simultaneously ; but 
we have been informed, that all the millers 
who have seen Mr. Hebert’s machine have 
entirely changed their opinions in this res- 
pect, the flour produced by it being unexcep- 
tionably good ; and it is perhaps worthy of 
remark, that, owing to the grinders being 
entirely metallic, there is no possibility of 
having gritty flour from them, which is 
sometimes excessively unpleasant in bread 
made from flour produced by the ordinary 
mill-stones. It appears, however, from the 
specification of the patent, that the invention 
does not consist in the material of which the 
machine is formed, but lies in the mechani- 
cal arrangements, which are defined to be 
these, if we recollect rightly : — The grinding 
and dressing of wheat, or the reduction and 
separation of other substances, by means of 
a single machine, in which the grinding and 
dressing operations are conducted upon one 
continuous surface ; or v;herein the meal, as 
it is projected from the circumference of the 
grinders, is received into a sieve whereon it 
is dressed. The patentee seems to give the 
preference to metallic surfaces on the ground 
of his having made great improvements thei’e- 
in, especially as relates to the easy means 
afforded of giving the grinding surface an 
unusual degree of truth ; and that kind of 
roughness which so nearly approximates to 
the french burrstone, as he expects will lead 
to the entire abandonment of the latter. An 
example of the application of burr-stones to 
these patent “ flour-makers” is, however, 
given in the specification, as the invention 
equally embraces them. 
It has long been anxiously desired by phi- 
'lanthropic legislators, that a substitute might 
be found for the horrid and degrading pu- 
nishment of the lash. Now, we are strongly 
impressed with the idea, that a machine of 
this kind, but of the size described in our 
previous Number (665), is admirably adapt- 
ed to effect the object in view, as the offend- 
er might thereby be easily made to atone 
in confinement for his offence, by grinding a 
given quantity of corn, as the condition of 
his liberation—say, for instance, a bushel 
for getting drunk, a sack for insubordination, 
and so forth. — Mechanic'' s Magazine. 
AERONAUTIC OBSERVATIONS. 
Since Mr. Green’s first attempt at balloon- 
ing he has travelled through tlie air above 
5000 miles, having made 2l8 ascents, and has 
had a bird’s-eye view ot every pait ol Eng- 
land. On the last occasion, when Lord 
Clanricarde went with him, he observed that 
surveyors and architects could with greater 
facility take plans of noblemen’s estates by 
ascending in a balloon, as they could have 
a biid’s-eye view of every locality, and if they 
only once adopted that method tliey would 
never lelinquish it. Since the suggestion an 
artist named Burton called on Mr. Green to 
obtain him the plan of a balloon constructed 
so as to act in the above way, it being con- 
nected to the car by a swivel. The inventor 
proposes to build a waggon, for the purpose 
of fastening a balloon to it, vvhich, when 
filled with gas, which can be done in various 
parts of the country at gas company’s gaso- 
meters, may be conveyed to any place a 
surveyor requires, vvheie, on a calm day, he 
can take plan.?, carrying with him the proper 
instruments. The balloon will then be fas- 
tened by ropes to the spot most favourable 
for observation, and raised to an elevation of 
300 or 400 feet, as necessary. In this way a 
bird’s-eye view can be taken of any town or 
city. Mr. Green is willing at any time that 
his balloon, by way of experiment, may be 
made use of in that way.- Globe. 
NEW LOCOMOTIVE-POWER. 
Mr. Mullins, M. P. for Kerry, has made 
a very important discovery in the scientific 
world, that of applying galvanism, instead 
of steam, for propelling vessels and carriages. 
He is now building a carriage upon his prin- 
ciple, and several of the first engineers, who 
have seen it, say there is every prospect of 
success, and that it will supersede steam. 
Limerick Star. The Dublin Evening Post 
claims the merit of this invention for the Rev. 
J . W. M’Gauley, who, it will he remembered, 
brought foiward something of this kind at the 
meeting of the British Association of Science 
in Dublin last August. — Mech. Mag. 
CONSUMPTION OF OPIUM IN 
CHINA. 
“It is a curious circumstance,” says the 
Quaiterly Revieiv, “ that we grow the poppy 
in our Indian territories to poison the people 
of China, in retuin for a wholesome beverage 
which they prepare, almost exciusivelv, for 
