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longitudinal fibers held together by a substance to which chemists have given the 
name of entraites, or tie-beams. The interior of the bark is smooth and of a deep yel- 
low color; a branch of the eucalyptus deprived of its leaves has a fibrous consistency ; 
this fibrous nature disappears as the wood grows old. The taste of the living barks is 
more decidedly aromatic than that of the dead barks, and both leave in the mouth but 
little of their soluble principles; for commercial purposes and for the extraction of 
the essence the leaves should be employed. 
The writer has another article on the chemical composition of the essence of this 
plant. Since the introduction of the eucalyptus, the plant has been the subject of 
many articles, the most complete of which has been published by Mons. Gubler in the 
Therapeutic Bulletin. 
As I have foreseen, quackery has overstated the properties of the plant, and it will 
happen to this as to others that its popularity will be ephemeral, because its virtues 
have been exaggerated. 
Undoubtedly the papers of Paris will maintain that this plant has little virtue. To- 
day they announce a syrup, a powder, an alcoholate, an aqueous or alcoholic extract of 
eucalyptes, 
The globules of the eucalyptus are now in vogne, and those who are striving to 
turn them to profitable account have exaggerated their virtues, much to the preju- 
dice of the plant. It is an antiperiodic and a stimulant ; it acts only by the essential 
oil which it contains. It is not necessary to attribute any other virtues to it. 
A NEW CEMENT.—By a series of experiments Dr. Griinberg has suc- 
ceeded in preparing a cement from Kieserite, an associate and consti- 
tuting about 12 per cent. of the so-called Abraunsalze of the salt deposits 
of Strassfurt, Prussia. By mixing, in presence of sufficient quantity of 
water, one equivalent (36 parts) of hydrate of lime with two equivalents 
(138 parts) of kieserite, consisting of water and sulphate of magnesia in 
equivalent proportions, he obtained a pasty mass which, upon heating, 
atforded a solid compound, composed of sulphate of lime and sulphate 
of magnesia, plus magnesia, which seemed devoid of useful properties. 
However, if the pasty compound be strongly ignited, pulverized, and 
mixed with water, a solid mass is instantly produced, which in hardness 
resembles marble rather than gypsum, and is capable of being polished 
and of withstanding the action of moisture. 
SUGARS OF THE THIRD CRYSTALLIZATION.—Comptes Rendus of 
March 10 contains a memoir upon “ raw sugars of the third erystalliza, 
tion,” by M.Ch. Violette, from which he draws the following conclusions - 
1st. Sugars of the third crystallization of the north of France contain- 
besides the sugar and earthy matters, the mineral and organic princi 
ples of the molasses. 
2d. Molasses especially rich in chloride of potassium may, in certain 
conditions, furnish sugar of the third crystallization of composition very 
different from that of the ordinary sugars of the third crystallization. 
These sugars may contain considerable quantities of sucrate of the chlo- 
ride of potassium, isomorphous with cane sugar. 
3d. The method of incureration of sugars by the addition of sulphuric 
acid, at present in general use, gives amounts of ash above the normal 
weights of that of raw sugars. The difference is greater as the ashes 
are richer in soda salts and alkaline carbonates. 
4th. The ash of the raw sugars of the north in question represents 
three-fourths the weight of salts contained in the sugars. 
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