416 C. E. Linebarger — Concentration of the Ions on the 



iron ; when larger surfaces are available, we shall doubtless 

 obtain better results. 



Fe 93.80 



Ni 4-81 



Co 0-51 



Cu 0-005 



P 0-19 



S 0-01 



99-325 



ISTo idea can be formed of the length of time the meteorite 

 had lain in the ground and very little of the amount of sur- 

 face decomposition, it has undergone ; — sufficient, however, to 

 remove all the finer pittings, leaving a comparatively smooth 

 surface. 



Having been much interested in Mr. Davison's examination 

 of the magnetic properties of the Welland meteorite, and 

 thinking that this line of investigation in other meteorites, 

 might lead to interesting results, I requested Mr. Marcus 

 Baker of the U. S. Geological Survey, to make an examination 

 of the meteorite, which he kindly consented to do. 



The result of this examination is to show that the meteorite, 

 as a whole, acts as a mass of soft iron, gaining polarity under 

 the inductive action of the earth. The lower portion on the 

 north side became a north-seeking pole, while the upper part 

 became a south-seeking pole ; a pretty distinct neutral line was 

 shown, inclined to the horizon at an angle (20°-25°) which is 

 approximately the complement of the local inclination of the 

 dipping needle. This induced polarity shifted with each 

 change in the position of the whole mass, and in general this 

 shifting of the poles took place promptly though not always 

 at once. Mr. Baker also states that his observations suggested 

 the probable existence of an unequal distribution of perma- 

 nent magnetism, but this matter requires further investigation. 



Art. LIV. — On the Influence of the Concentration of the 

 Ions on the Intensity of Color of Solutions of Salts in 

 Water • by C. E. Linebarger. 



The color of a solution of a salt in water depends upon the 

 color of the ions into which it is decomposed by the act of 

 solution as well as the color of the salt itself. If the salt is 

 colorless and contains but one colored, ion, any circumstance 

 tending to increase the number of dissociated ions, tends to 

 intensify the color of the solution. If the salt is colored and 



