ON EUCALYPTUS KINOS. 



103 





Formalin 



Formalin 



Formalin 



Acetaldehyde 





5 drops 



10 drops 



15 drops 



15 drops 



E. Dawsoni, 



15/1/04 



16/1/04 



18/1/04 



p l/7/04 



Oct. 1893 



no change 



no change 



salmon 



coloured jelly 



formed 



thickened a 

 little 



E. intertexta, 



,, 



)* 



25/4/04 1/7/04 



May 1903 







partly solid 



and partly 



fluid 



partly solid 



and partly 



fluid 



E. oleosa, 



>f 



16/1/04 





1/7/04 



May 1903 





light brown 

 jelly formed 





had thickened 

 considerably 



E. calophylla, 



a 



16/1/04 



1/7/04 



1/7/04 



June 1897 





no change 



as fluid as 

 when put up 



as fluid as 

 when put up 



E. calophylla, 



„ 



„ 



1/7/04 



1/7/04 



Dec. 1895 







no change 



no change 



E. eximia, 



>t 



„ 



>) 



>> 



Jan. 1898 











E. microcorys, 



>> 



,, 



it 



,, 



April 1896 











E. maculata, 



,, 



} , 



>> 



»» 



July 1898 











E. pilularis, 



15/1/04 





... 



1/7/04 



boiled kino. 



brown jelly 

 formed 







thickened but 

 not yet a jelly 



Angophora 



15/1/04 



16/1/04 



19/1/04 



20/1/04 



intermedia 



no change 



no change 



dark brown 



dark brown 



April 1888 







jelly formed 



jelly formed 



Pterocarpus 



„ 



16/1/04 





2/3/04 



marswpium 





brown jelly 





quite thick 



India 





formed 





25/4/04 



brown jelly 



formed 



Eucalyptus 



paniculata 

 March 1904 



A tincture (1 in 10) was made of this kino by dis- 

 solving in a small quantity of water, adding twice 

 the amount of 90% alcohol, and filtering from the 

 small quantity of bark. To 5 cc. of tincture 5 drops 

 of formalin were added. Next day a perfect jelly had 

 formed. The tannin in the " Ironbarks " is thus again 

 shown to be allied to that of the " Peppermints " as 

 E. dives, etc. 



Table II. 



This table shows the influence a slowly gelatinizable kino, 

 like that of Eucalyptus Woollsiana, has upon a rapid gelati- 

 nizable one, like that of Eucalyptus dives. The mixtures 

 were prepared on the 21st January 1904, and five drops of 

 commercial formalin added to each. 



