62 . Scientific Intelligence. 



swine yard. Its singularity attracted his attention and he car- 

 ried it to his house and cleansejl it, but in a little time it was 

 forgotten or lost sight of. His definite recollection is that that 

 stone was very like this aerolite in its general appearance, but 

 he is wholly at a loss to trace any other connection of the 

 specimen originally found by him and this aerolite found years 

 afterwards on the clay bank of the creek at such a distance 

 from his house. The fragment was broken from the. stone 

 after it had been found in 1863. 



The exact data necessary to base correct conclusions upon, 

 are wanting in this case, but the facts above stated may justify 

 the supposition that stony meteorites may remain intact from 

 the disintegrating effects of the soil and atmosphere for a much 

 longer time than has heretofore been accorded them — assumed 

 by one fully competent to form a trustworthy opinion (the late 

 Professor C. U. Shepard) to be from a few months, to two or 

 possibly three years. 



The close, hard, semi-vitreous crust of the Tomhannock stone 

 would suggest that so long as its exterior was not fractured by 

 its fall, it might remain unharmed by atmospheric agencies 

 alone for many years, or resist for a lqng time the action of the 

 soil. For years this meteorite seems to have been exposed to 

 one, or more probably, both, of these influences, yet when it 

 came into my possession it showed' no deterioration except 

 from the blow from the hammer. 



An analysis of the metallic portion of this stone by F. A. 

 Wilber gave the following results : 



Metallic iron 13-02 



Nickel 3-06 



the most notable feature being the excessive proportion of the 

 nickel as compared with the iron. The composition of the 

 stony portion has not yet been determined. 

 Cortlandt-on»Hudson, 23d Feb., 1887. 



SCIENTIFIC INTELLIGENCE. 



I. Chemistry and Physics. 



1. On the Boiling point of liquefied Ozone. — From the fact 

 established by Hautefeuille and Ckappuis, that ozonized oxygen 

 exposed under a pressure of 125 atmospheres to the temperature of 

 boiling ethylene, — 102 - 5°, yields liquefied ozone as a dark blue 

 liquid which retains its state at this temperature for a short time 

 even when the pressure is withdrawn, Olszewsky was led to the 

 conclusion that the boiling point of ozone was probably but a little 



