310 MODE OP ADMINISTERING COd's LIVER OIL. 
begins to thicken a little, I thtn add the oil and continue to 
triturate until the mixture is homogeneous, and add the 
water little by little during the trituration. In this manner 
I have obtained an emulsion of castor oil which leaves 
nothing to desire, and which will remain eight or ten days 
without an atom of oil separating. — Jour, de Chimie 
Medicale, 
ART. LXIII.— ON THE EMPLOYMENT OF THE AIR BLADDERS 
OF FISH FOR ADMINISTERING COD'S LIVER OIL. 
I HAVE employed with this object, the bladders of our 
river fish, such as gudgeons, ablettes, and perch. They 
replace with advantage the pharmaceutical capsules, which 
are difficult to prepare, expensive, and of less capacity. 
These vesicles being in most instances separated into two 
cells by a contraction or partition, they*can be easily divided 
in this place by a cut of the scissors. The oil is introduced 
into the resulting opening by means of a little syringe of 
glass, which orifice is afterwards closed by means of a 
thread of silk, applied in a slip knot around the part 
entered by the syringe, which is then drawn tightly as soon 
as the syringe is withdrawn, and tied in a double knot. 
One-sixth, one-fifth, one-fourth, or one-third of an ounce 
of the oil may be thus taken at a dose, without the patient 
perceiving the taste or odour. 
To render the employment of these new natural capsules 
more agreeable, they can be sprinkled with sugar. 
These vesicles have a further advantage, that of being 
preserved in spirit of wine or gin, so as to be filled with oil 
as the demand requires. — De Rudder. — Jou7\ de Chim, 
Medicale. 
