378 Miscellanies. 



will deposit small crystals of a more or less brown color. It may 

 also be obtained from an alcoholic solution. 



Phloridzine is but slightly soluble in cold water, but more so in 

 warm. At 100° C. it is dissolved in every proportion. It is more 

 soluble in cold alcohol than cold water, but equally in the two liquids 

 at their boiling temperature. Heated above 100° C. it slowly 

 melts, at 177° boils, and at 197° is decomposed, producing benzoic 

 acid which sublimes. It is decomposed by the sulphuric, nitric and 

 hydrochloric acids. Ammonia and the other caustic alkalies in so- 

 lution dissolve it without alteration. The deutosulphate of iron 

 colors the solution of phloridzine a deep brown, causing at the same 

 time an ochre-yellow precipitate — no change in the color is effected 

 by the protosulphate. Its composition is carbon 14, oxygen 9, and 

 hydrogen IS atoms. 



The author, M. de Koninck, suggests in his memoirs, that phlo- 

 ridzine may be ranked with the most valuable febrifuges and will 

 rival in utility the sulphate of quinine. 



2. Gastric Juice. — This liquid has been lately analyzed by M. 

 Henri Braconnot, who found it to contain 



1. Free hydrochloric acid, in a remarkable quantity. 



2. Hydrochlorate of Ammonia. 



3. Chlorid of Sodium. 



4. Chlorid of Calcium. 



5. Chlorid of Iron. 



6. Chlorid of potassium, (slight traces.) " 



7. Chlorid of Magnesium. 



8. A colorless oil of an acrid taste. 



9. Animal matter soluble in water and alcohol, in large quantities. 



10. Animal matter soluble in the diluted acids. 



11. Animal matter soluble in water and insoluble in alcohol, (sali- 



vary matter of Gmelin.) 

 .12. Mucus. 

 13. Phosphate of Lime. 



The fluid that was operated upon by M. Braconnot was obtained 

 from dogs, by means of sponges which they were made to swallow. 

 The results obtained confirm the observations of Prout, Tiedmann, 

 and Gmelin, that the stomach when stimulated by foreign or ali- 

 mentary substances, has the remarkable power of secreting a large 

 quantity of free hydrochloric acid. This analysis, as its author ob- 



