ELISHA MITCHELL SCIENTIFIC SOCIETY. 8/ 



filterino-. This precipitate was then dissolved in di- 

 lute hydrochloric acid and boiled to expel most of the 

 sulphur dioxide. The solution was re-precipitated 

 with ammonium hydroxide. The precipitated h}'- 

 drates were washed free from ammonium salts and 

 then dissolved in concentrated hot hydrochloric 

 acid. Five crystallizations from the stron^" acid were 

 found to be sufficient to remove the small amount of 

 iron remaining'. 



Investigfations are now in prog^ress concerning- the 

 composition and nature of the precipitate produced by 

 the sulphur dioxide. 



A NEW POST vOAK AND HYBRID OAKS. 



BY W. W. ASHE. 



During- the past two years, 1893 and 1894. I have 

 observed during' several trips throug-h the eae^tern sec- 

 tions of Virg-inia, Xorth and South Carolina, a larg-e 

 number of oaks morpholog-ically different from any de- 

 scribed species, and in most of the cases, where mature 

 fruiting- specimens have been secured, the characters 

 have required that they be referred to the already larg-e 

 list of oak hybrids. One of them, however, is a new 

 form of the post oak, distinct enoug^h to merit varietal 

 place, and so described. The other forms, wh.ch I 

 have examined, from which late fall leaves, winter buds 

 and fruit were secured, have proved to bt- hitnL^rto un- 

 described hybrids ; while a large number are hybrids 

 previous!}^ observed by others in different parts of the 

 United States and to the elucidation of which mv mea- 



