C O N T E N 1^ S 



TWEXTY^-FOURTII VOLUME. 



I. Analysis of the Chromate of iron fmm the Ouralian 

 Mountains in Siberia. By A. Laugikr . . Page 3 



II. On the Tendencji of Elastic Fluids to Diffusion through 

 each other. By John Dalton . . 8 



III. On the jdlsorptinyi of Gases by JVater and other Li- 

 quids, i??/ John Dalton ]3 



IV. An Experimental Inquiry into the Nature of Gravelly 

 aiid Calculous Concretions in the Human Subject; and 

 the Effects of Alkaline and Acid Substances on them, 

 in and out of the Body. By Thomas Egan, M.D. 

 M.R.I.A 25 



V. The Si/phon applied to the Ji'orm Tub as a Refrigerator ; 

 or, A Plan for conveying Jfafer in am/ Quantity tc a 

 IVorm Tub of the largest Dimensions, if perfectly Air 

 tight. 5y Alexander Johnston, E/7o-//?y?er ,. 37 



VI. Description of a Comeiarium invented by Ez. Walker, 

 Esq 37 



VH. A Description of a Property of Caoutchouc, or Indian 

 Rubber; with some Reflections on the Caiise of the Elas- 

 ticity of this Substance. In a Letter to Dr. Holme 39 



VIII. Remarks on Urine, and the Prognostics ivhich are de- 

 rived from it. By Dr. CoLLKSiivcH 44 



IX. Twenfy-sixth Communication from Dr. Thornton, 

 relative to Pneumatic Medicine . . 47 



X . On a new Black Dye to be applied to all Kinds of Linens 

 and Stuffs. By M. Hermbstadt, of Berlin . . 49 



XI. New pjxperiments on the Respiration of Atmospheric 

 Vol. 24. No. 96. May 1806. a « Air, 



