98 



ON SOME N.S.W. TAN- SUBSTANCES. 

 QUALITATIVE TESTS, (Dilute Extract)— continued. 





6 



7 



8 



Species. 



Ammonium 



Potassic Dichromate. 







Sulphide. 





Tartar Emetic. 



14. Angophora 



Turbidity. 



Very dark- brown ppt 



Very slight light- 



intermedia, DC. 







brown ppt 



(Kino.) 









15. Eucalyptus 



No change. 



A brown gelatinous 



Turbidity ; a con- 



macrorrhyncha, F.v.M. 





mass with a .slight 



siderable purplish 



(Kino.) 





yellowish tinge ; the 



gelatinous ppt on 







tube can be inverted 

 without disturbing 

 its contents. 



standing 



16. Eucalyptus 



ditto 



ditto 



ditto 



hsemastoma, Smith. 









(Kino.) 









17. Eucalyptus 



Turbidity 



Slight orange- brown 



No change 



rostrata, Schlecht. 





ppt 





(Leaf-galls.) 









18. Eucalyptus 



ditto 



Very slight brownish 



ditto 



Gunnii, Hook., var. 





ppt, which increases 





(Bark from Delegate.) 





on standing 





19. Eucalyptus 



ditto 



ditto 



ditto 



Gunni, Hook., var. 









(Bark from Bombala.) 









20. Acacia 



ditto 



No change 



ditto 



colletioides, A. Cunn., 

 var. 









(Bark.) 

 21. Acacia 



ditto 



Cloudiness ; slight 



No change other than 



rigens, A. Cunn. 





brownish ppt on 



separating into two 



(Bark.) 





standing 



layers, a brownish 

 and a colourlesss one, 

 the line of demarca- 

 tion disappearing on 

 standing 



22. Acacia 



ditto 



Chicory coloured ppt 



No change 



vestita, Ker. 





on standing 





(Bark.) 









23. Acacia 



ditto 



Like A. vestita, but a 



ditto 



pendula, A. Cunn., var. 





little darker in colour 





glabrata, F.v.M. 









(Bark.) 









24. Acacia 



ditto 



Same as A. vestita 



ditto 



binervata, DC. 









(Bark.) 









25. Acacia 



ditto 



Brown ppt 



ditto 



longifolia, Willd. 

 (Bark.) 

 26. Acacia 









ditto 



Very slight brownish 



ditto 



glaucescens, Willd. 





ppt, which increases 





(Bark.) 





on standing 





27. Acacia 



ditto 



Same as A. vestita 



ditto 



dealbata, Link. 









(Bark.) 









28. Acacia 









decurrens, Willd. 









See p. 33 for reactions 









not noted here. 









29. Fdsanus 



No change 



Purplish-brown ppt 



ditto 



acuminatus, R. Br. 









(Bark.) 









