Broncho- Pneumonia from Inhalatiofi. 295 



lower border, and there was no water left in the bronchia but 

 only some reddish froth. Cadeac and Malet claim that a certain 

 amount of distilled water caused 'broncho-pneumonia, whereas 

 the same amount of common city water had no ill effect. If there 

 was no other cause for the trouble it would seem as if the salts 

 and other solids in the city water, giving it a greater density, 

 withheld it from causing the same exudation and inflammation. 

 The microbes carried in from the mouth or pharynx may easily 

 cause broncho-pneumonia. 



Of other agents suspended in the water thrown into the lungs, 

 some that are in full solution or very volatile, may be quickly 

 absorbed and do little or no harm. 



A great number of different agents have been thrown into the 

 bronchia and have disappeared by absorption without leaving any 

 marked irritation. This is true of strychnia (Majende), solu- 

 tion of extract of nux vomica (Colin, Bouley), alcohol (Colin), 

 compound solution of iodine (I. i, KI. 5, H^O. 400) (Diecker- 

 hoff), opium, quinine, extracts of gentian and belladonna (Gou- 

 baux). The following agents have caused bronchitis or broncho- 

 pneumonia : — ammonia, oil of turpentine (Cornil, Trasbot, Mas- 

 salongo), iron chloride (Veragut), silver nitrate, extract of 

 cantharides (Cornil), chloroform, nitrate of potash (6 grams in 500 

 water) (Cadeac), chloral (25 grams to 100 water) (Cadeac, Ma- 

 let), ether (P. Bert) and soda sulphate (L,aquerriere). 



Insoluble bodies in suspension in water or watery fluids, or in- 

 haled as dust remain as sources of irritation. Road dust from 

 limestone, clay and, above all, fine sand, prove a source of great ir- 

 ritation and may lay the foundation of bronchitis, broncho-pneu- 

 monia or tuberculosis. The anthracosis pulmonum, coal- miner's 

 lung, from inhaled coal dust, the chalisis pulmonum, stone-hew- 

 er's lung, and siderosis pulmonum or cutler's lung, from the fine 

 particles of iron or iron oxide, are familiar ex amples of trade dis- 

 eases in man due to inhalation of angular, irritating, insoluble 

 materials. In cities burning soft coal, and subject to fogs, man 

 and beast alike inhale carbon particles which accum ulate in the 

 air cells, lung tissue and bronchial glands. 



Zboril records the case of a horse, at the Vienna Veterinary 

 School, which showed in a bronchium a branch of Robinia 

 pseudo-acacia (locust) 30 centimeters long and with four short 



