'62^ 



CHEMICAL PROPERTIES OF BACTERIAL GUM LEVAN, 



1892) corrected the above statement, he having found it to be 

 erroneous. 



The facts of the [aj^ being - 40°, and the gum yielding only 

 levulose on hydrolysis at once suggested inulin, and I therefore 

 made a careful comparison of its behaviour with sundry reagents, 

 as against that of inulin, and, for purposes of comparison, the 

 closely allied body starch. 



The results of this comparative examination are stated in 

 tabular form below. 



* Seveial examples of carefully purified inulin Avhich I prepared from 

 dahlia tubers grown at Sydney, gave a copious precipitate when a solution 

 was mixed with strontia water, but a sample procured from Europe, the 

 source of which I do not know, gave no reaction when treated in the same 

 way, though all the other tests gave results identical with the Sydney pre- 

 parations. 



