33 
phuric acid be formed, which, in the small quantity in which it would 
exist, could have no injurious influence, but rather beneficial. The 
amount of injury is also influenced by the condition and temperature 
of the atmosphere. If the air be dry and cold, the injury is much less 
than when a warm, moist condition prevails, accompanied with strong 
light, such as exists in the summer seasons. 
INDIGO-CARMINE IN SUGAR MANUFACTURE.—Indigo-carmine easily 
dissolves in water, furnishing a clear blue solution. For the preparation 
of this solution in practice, one pound of indigo-carmine is dissolved in 
ten pounds of water, the water being added little by little, with con- 
stant stirring, in order to dissolve it uniformly and produce the clear blue 
liquid required. This solution is poured into the material to be cleared, 
until the whole acquires a light-blue color. Determined proportions 
cannot be given, since some manufacturers make their sugar more blue 
than others, and this also depends partly upon the quality of the ma- 
terial. Besides, it is quite easy to determine the correct proportions by 
a little practice. The use of this solution is much preferable to ultra- 
marine, since the sugar treated with if shows an extremely brilliant 
luster, and appears dazzling white. 
Liguip GLuE.—C. Puscher, in Polytechnisches Notizblatt, states that 
a mixture of one part grape-sugar in three parts water, when spread upon 
paper, shows little adhesive power or brilliancy, and when dried, and 
subsequently moistened, will not stick to the fingers. But if tothe su- 
gar solution be added an amount of slaked lime equal to one-fourth that 
of the sugar present, and the whole be heated to 60° to 75° C., (140° to 
170° Ff.) and allowed to stand for several days with occasional shaking, 
the greater part of the lime will be dissolved, and the mixture will act 
like gum, having ail its glistening and adhesive properties. If to the 
sugar solution thus prepared three parts of glue be added in small pieces, 
it quickly dissolves on being warmed, and the whole remains fluid on 
cooling without losing its adhesive properties. 
LAURUS A FEBRIFUGE.—The ereat success which has attended the 
use of the leaves of Haurus nobilis in cases of intermittent fevers, on ac- 
count of their febrifugic and antiperiodic properties, will probably bring 
them into general use in medical practice. The leaves are dried ata 
low temperature (in a closed vessel, to avoid loss of volatile matters) 
until they become brittle. They are then reduced to a fine powder and 
15 to16 grains of this powder is then macerated from ten to twelve 
hours in a glass of cold water, and about two hours before the attack is 
expected the liquid and the powder are administered. No abnormal 
effect is produced, and the attack does not appear after the administra- 
tion of the first mass. No particular treatment or dietis necessary dur- 
ing the good days. This medicine is thus administered during the three 
. following days. This treatment has proved etfectual in cases of quoti- 
’ dian and tertian fevers, which have rebelled against the action of sul- 
phate of quinine, and it is probable that if administered in the same 
manner in cases of quartan fevers it would produce the same effect. Of 
34 cases reported in which it was used, only six failed, and these were 
all related to quartan fevers. 
_ EUCALYPTUS GLOBULUS.—From the results of certain investigations 
upon the leaves and bark of Hucalyptus globulus used in cases of inter- 
mittent fevers, M. Rabuteau maintains that the leaves do not contain an 
alkaloid similar to quinine, as has been stated, and that the substance suc- 
cessfully used by the physicians of Corse is an undetermined salineresidue 
obtained by treating an alcoholic extract of the bark with sulphuric acid. | 
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