454 



depth of respiration was greatly increased by great heat. An in- 

 crease in quantity was caused also by cold bathing, and sponging, 

 and the cold shower-bath ; by breakfast, dinner, and tea when tea 

 actually was taken, but when coffee was substituted there was a 

 decrease. Supper of bread and milk also caused a decrease. Milk 

 by itself or with suet caused an increase. 



An increase was obtained with the following articles of diet, viz. 

 eggs, beef-steak, jelly, white bread (home-made), oatmeal, potatoes, 

 sugar, tea, rum (1 oz.). The following caused a decrease, viz. butter, 

 fat of beef, olive oil, cod-liver oil, arrow -root, brandy (1 oz. to If oz.), 

 and kirchenwasser. Ether (l drachm) increased the quantity and 

 depth of inspiration. A decrease in quantity was caused by sp. 

 ammon. co. (3iss), sp. ammon. feet. (3iss), tincture of opium (20111,), 

 morphia ( and | gr.), tartarized antimony (-| gr,), and chloride of 

 sodium. 



Carbonate of ammonia (15 grains) caused a small increase at first 

 and then a small decrease ; febrifuge medicines had a like effect. 

 Chloroform (25 n\ and 5ss), by the stomach, varied the quantity 

 from an average increase of 28 cub. ins. to an average decrease of 

 20 cub. ins. per minute ; with a maximum increase of 63 cub. ins. 

 per minute. Chloric ether (3ss) also varied the quantity, but there 

 was an average increase of 17 cub. ins. per minute, and of T8 per 

 minute, in the rate ; whilst the pulse fell on the average 1 7 per min. 

 Chloroform, by inhalation (to just short of unconsciousness) , lowered 

 the quantity a little during the inhalation, and more so afterwards. 

 The rate was unchanged, but the pulse fell, on an average, 1'7 per 

 min. Amylene similarly administered and to the same degree, 

 increased the quantity during inhalation 60 cub. ins. per min., but 

 afterwards decreased it to 100 cub. ins. per min. less than during 

 the inhalation. The rate of respiration was unchanged : the pulse 

 fell 6 per min. at the end of the observation. 



Digitalis (infusion |i) varied the quantity, increasing it at first 

 and then decreasing it. The rate of inspiration was unaffected, 

 whilst that of pulsation somewhat increased. 



The paper is accompanied by tables of numerical statements, and 

 by diagrams exhibiting the results in a series of curves. 



The President announced that the next Meeting of the Society, on 

 the 7th of May, would be held in Burlington House. 



