206 MATER i A MEDIC A AND THERAPEUTICS. 



From Farina Lini is prepared : 



a. Cataplasma Lini. Mix Linseed Meal 4, with toiling 



Water 10, and add Olive Oil -5, stirring constantly. 



Freshly bruised linseed is better than the meal and 



olive oil. 

 Linseed meal is also used in preparing all Cataplasmata 



except Cataplasma Fermenti. 



2. Infusum Linu " Linseed Tea," 1 in 30, with Liquorice. 



Dose, ad libitum. 



3. Oleum Lini. Brown. Made by expression without heat. 



ACTION AND USES. 

 1. IMMEDIATE LOCAL ACTION AND USES. 



Externally. Linseed meal is used only as the Cataplasma, 

 which is the poultice universally employed to convey heat and 

 moisture to parts, and thus affect the nerves, circulation, and 

 nutrition generally. The oil may be applied to burns, either 

 pure or mixed with an equal quantity of lime-water, con- 

 stituting carron oil, a substitute for Linimentum Calcis. It 

 may also be used as a laxative in the form of enema. 



Internally. Infusum Lini, or " linseed tea," is a familiar 

 demulcent drink, containing a large quantity of mucilage, 

 which coats the surface of the pharynx and fauces, and thus 

 relieves troublesome throat cough, especially when it is com- 

 bined with a little stimulant lemon. 



2. ACTION IN THE BLOOD, SPECIFIC AND REMOTE LOCAL ACTION. 



Linseed tea is supposed to have a specific and remote 

 local effect as a demulcent on the bronchi and urinary passages, 

 but this is probably referable to the warm water only. It is, 

 perhaps, slightly diuretic as oil of linseed becomes oxydised 

 in the system (as it does on exposure to air), and is excreted by 

 the kidneys as a resinoid body which stimulates these organs. 



MALVACEAE. 



Oossyimim COTTON WOOL. The hairs of the 

 seed of several species of Gossypium, carded. 



Preparations. 



pyroxylin. Gun Cotton. Made by immersing the wool in a 

 mixttire of sulphuric and nitric acids, washing, draining, 

 and drying. 



