VI CONTENTS. 



PAGE. 



42. Diffusion of hydrogen into hydrogen through water. Fig. 21 ; table 23 66 



43. Diffusion of air into air through KC1 solution. Fig. 22; table 24 67 



44. The same, continued. Fig. 23 ; table 25 69 



45. The same, continued. Fig 24; table 26 70 



46. The same, continued. Fig. 25 ; table 27 71 



47. Diffusion of air into air through NaCl solution. Fig. 26 a; table 28 72 



48. The same, continued. Fig. 26 b; table 29 73 



49. 50, 51, 52. Diffusion of air into air through CaCl 2 solution. Figs. 27, 28A, 



28 b, 29; tables 30, 31, 32, 33 73 



53. 54. 55- Diffusion of air into air through BaCl 2 solution. Figs. 30, 31; tables 



34, 35. 36 76 



56, 57, 58. Diffusion of air into air through K 2 SO, solution. Figs. 32, 33; tables 



37. 38, 39 78 



59, 60. Diffusion of air into air through Na,S0 4 solution. Figs. 34 a, 34 b; tables 40,41 80 



61,62. Diffusion of air into air through FeCl 3 solution. Figs. 35 a, 35 b; tables 42,43 . 81 



63. Diffusion of air into air through A1C1 3 solution. Fig 36; table 44 83 



64. Diffusion of a gas through a manometer tube. Fig. 37; table 45 83 



65. Summary. Fig. 38; table 46 85 



