Materia medica : a manual for the use of students / by Isambard Owen.

  • Owen, Isambard, Sir.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: Materia medica : a manual for the use of students / by Isambard Owen. Source: Wellcome Collection.

    57/226 page 43
    Theobromse. Cocoa-butter. From the seeds of Theobroma Cacao. (Byttneriacetc). A concrete oil. Melta at 123 F. The above oils are all soluble in ether, and insoluble in water. The liqxiid oils are miscible one with the other in all proportions. Castor oil mixes with absolute alcohol in all proportions, and is soluble in twice its volume of Eectified Spirit. Croton oU, when freshly expressed -ndthout the aid of heat, is soluble in equal parts of alcohol, but by keeping loses its solubihty. The other fixed oils are only slightly soluble in alcohol. Admixture of any one with Castor Oil renders it more soluble in alcohol than the oil alone. By prolonged exposure to air the fluid oils partly decompose, forming acrid products, and becoming rancid. Ohve oil is the least liable to such decomposition. Linseed and Castor oUs become solid by prolonged exposure. They are therefore drying oils. At a temperature of 36° F., the margarin in Olive and Linseed oils solidifies and separates. Officinal Prepabations. Linimentum Crotonis. A solution in equal parts of OH of Cajeput and Eectified Spu-it, 1 in 8. Almond Oil is used in forming various ointments (see Compound Preparations) and is the basis of Oleum Phosphoratum. Olive Oil is used^ in foi-ming various ointments, hniments, and plasters ; also Charta Epispastica, Cataplasma Lini, and Enema Magnesite Sulphatis. Castor Oil enters into Flexile Collodion, Compound Calomel Pill, and Lin. Sinapis Co. Nutmeg-butter into Empl. Calefaciens and Empl. Picis. Cocoa-butter is used as a basis for Suppositories (see ]3. 9).
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