394 BENZOL 



After thorough disinfection, recent wounds carefully 

 powdered with tannoform are quickly covered with a pro- 

 tecting crust, suppuration seldom occurs, and cicatrisation 

 speedily follows. When granulations are too prominent 

 they are touched with copper sulphate, and covered with 

 a mixture of equal parts of tannoform and alum. For 

 cracked heels and mallenders the powder should be rubbed 

 into the fissures with a pledget of cotton-wool, or the 

 finger, until moisture disappears. 



Tannoform, being odourless and non-poisonous, is espe- 

 cially valuable in canine practice. It is extensively em- 

 ployed in the treatment of moist eczema, otorrhcea, dog- 

 bites, and operation wounds. In moist eczema the skin 

 is first cleansed with an antiseptic solution, and then dusted 

 with pure tannoform. Abrasions and small wounds may be 

 dressed with a pomade composed of one part tannoform 

 and six parts of lanoline, or vaseline. 



DOSES, etc. Horses and cattle, ^iv. to j. ; foals, grs. 

 xxx. to grs. xc. ; calves and pigs, grs. xlv. to 3ij- 5 dogs, 

 grs. x. to grs. 1. These doses may be repeated three or 

 four times a day, and are conveniently given in cold linseed 

 gruel, or milk, or in electuary. For otorrhoea, after cleansing 

 the ear, tannoform may be insufflated, or employed in 

 alcoholic solution (5 to 10 per cent.). Tannoform mixed 

 with collodion forms a useful protective for small sutured 

 wounds. 



BENZOL, BENZENE, OR AROMATIC SERIES OF 

 CARBON COMPOUNDS 



The benzol, benzene, or aromatic series of carbon com- 

 pounds includes a number of antiseptics and antipyretics. 

 The lowest members of this series contain six carbon atoms, 

 five of which have their affinities satisfied by hydrogen, 

 constituting the organic radicle phenyl (C 6 H 5 ). The 

 hydride is benzene (C 6 H 5 H). Substitution of hydroxyl 

 (OH) for one hydrogen atom produces the phenol carbolic 

 acid (C 6 H 5 OH). A like substitution of one or more of the 

 hydrogen atoms for other organic radicles forms other 

 aromatic bodies. Still further variety results from the union 



