The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1856-1888, 1872-08-31

tr workman may lo-e large -un- for bis employer.
A. q proof OF this assertion. ] vail give a very strik-
iuR example I had at Quincy three boilers. the
Ir; produced during the whole 90 last season 80
per crnt. 10 weight o. sugar - The first -: thr
srcond 81 per cent. the third - per cent IL j.
easy IL account for the difference IN these Trsult- ~
We remember with what facility the crystals already
formed may b. Te-dissOlved by adding % The mTSss
too large a quantity Of liquid ig one charge The
crystals thus melted viii only b. reformed with
great difficulty and have q gIeaf tendency 60 change
iatO uuery-tlllizlbir sugar.
To avoid thes- Losses the boiler should examine
the nlIsss regularly and With great care He should
never condne himself 20 the two or three trials by
proof stick which may b. quite Necessary
The manager should b. able occasionally 20 Oh
serve BE movement u the indexes VI tie steam
gauges. which u The operation j. well managed viii
rise Or fal! very slowly witIuut ever 'akI1g those
sudden starts which sufficiently denote the boilers
ircapaeity-
Aher Two hours Of feeding. the juice Will. in an
ordinary way. cover tue coils. The steam may then
be admitted into the third coil. Il all now also
De- possible ~ feed Continuously il il Is washed. a.
The operation becomes easier. the specialization
being now vigorous aud regular
IY.-FDEaArIOS % uE 0EEtrEST POSSIBLE AMOUNT
or GRAIN.
After another hours feeding 0f the boiler. in all
three hour. q higher temperature may be- COM
m-ncrd and the index of The vacuum steaE gauge
allowed % mount from 20 10 2j7 The aim Of
this concentration i ~ form The largest possible
quantity OF grain IL will render the process Of
capitalization more active and more rapid. and the
influences Of greater heat will give the crystals more
s1lidity and drvnes=. Most boilers. 20 obtain this
result, shut of One-fOurth Of the supply Of water 10
the aiT-pHmp. The vacuum Of the apparatus being
thus diminished, the boiling point Of the liquid Il
raised.
After five or six hours the last proof shonld be
taken. which ought TO be rather strong. The sam
pie taken should. II held between the index-fnger
and the thumb, fall back on to the latter very slowly
in forming what the boilers call the tasSel this tas-
sci - generally terminated by a thread OF very
clear syrup. called the string. In these conditions
a due hard sugar will he produced.
Having made this last trial. il will be- well. should
IL BE- wished 10 obtain 4 very white sugar. 10 lower
the temperature TO 559 G. Q3l9 F), by fully
opening the water supply Of the vacuum apparatus
aud closing about One-fiith the principal steam sup
ply tap.
ACCIDENTS To TIE BOILING.
In explaining the phenomenon Of DELEGATION. /
showed thlt the soluble organic salts of lime. which
are deliquescent and very viscOus. especially pre-
vent the sugar from crystallizing.
IL often happens in France. at the close Of the
manufacture, some Of the frozen beet roots begin
to thaw the pectOse in direct contact with the juice
is transformed into metapectic acid Tactic acid is
also formed. Then these acids, with the lime. will
consequently. with the heavy syrnps. form some
viscOus compounds, which may not be extracted
before the time Of boiling. In this case a process
given 10y Nm. Leplay and Cuisinier may be prac-
ticed. which j have used at Quincy. IL consists IN
the employment Of carbonate of soda after satura-
ton. because the carbOnic acid OF the carbonate OF
soda will combine with the lime of the metapectate
and lucLAtf OF line, ana luzOiuDle Carbonate Ol
lime. and metapectate and lactale of soda are
formed some similar reactions will take place with
citrate. or malate Of lime. The new salts
formed are not more yiscOus, and are less proven
tive of capitalization.
Before having recourse to This means il will be
well 10 try another which has been given by VI.
Leze. chemist. Of Douai it il SIMPLY 10 feed the
vacuum pan for one hour with water only (nstead
OF juice
The difficult bOilings may also proceed from too
large excess OF lime. a certain means of ascertain
ing this j. 10 use c1g1ctGDd paper (this paper which
il used in the whole Of Germany and the north Of
France differs from litmus paper with which such
feeble and incOnstant cOlOrs are produced that it
will not serve to test the juice) The curcl0ad pa
per on the contrary will become Of a very deep
color: IL will be- sufficient (f this excess Of lime i
shOwu) 10 feed with some portion Of syrup which
has been submitted to a double filtration through
char.
In conclusion I DO not hesitate to protest against
that deploTablr practice which consists in the Oh
tanning % large grain by only partially e%mptying
the first boiling and recommending "A second by
FEEDING the crystals already formed. Those who
thus act know however that 4 considerable part of
the cfyslIliiZrd sugar j. by This means changed i'll
10 glIcOsic products-JLe Sugar Care.