44 ON ADRIAN OPLE RED, &C. 



10. That it is to these two substances the hidrogen ga& 

 owes its properties of burning with a blue flame, and being- 

 heavier than when pure. 



1 1. Lastly, That the oil and the phosphorus are separated 

 from the hidrogen gas by oxigenized muriatic acid, which 

 destroys them. 



VI. 



Qn the Madderivg of Cotton and Linen Thread, and Di/eing 

 fhein Adrianople Red and other fixed Colours; and on Spou" 

 taneous Lifiammaiions : by John Michael Haussmann*. 



Fixing colours ^-^ order to proceed to the dyeing of cotton and linen 

 •u thread. , , ,, ' n n % % i • • , 



thread all sorts oi used colours, nothing is necessary, but to 



fix on the thread, in any manner whatever, more or less 



aUimine, after having given it a slight coating of oil. The 



complete success of the result however depends on certain 



modihcations to be observed in the processes. 



The various -experiments I had made in the art of dyeing 



had rendered me so familiar with trials on a small scale, that 



at length I found none of them fail. It is not till since my 



paper on maddering was published in the Annales de Chi- 



Oilsdonot re mie, that I experienced difficulties in the application of oils, 



ma 1. HTxed ^hen operatiny in a larger way. The linseed oil, which had 

 wuh alkaline * ° . . ... 



solution of aiu- always afforded me a milky mixture in limited proportions 

 iwiriesowellin ^^^^ jj^g alkaline solution of alumine, then speedily separ- 



large quaati- , c • l j r 



jies. ated, when I was desirous of making a pretty large stock, 



and the impregnation of the skeins became impracticable 

 under these circumstances. It was the same with all the 



Fish oil best, other fat oils: fish oil, indeed, continues mixed a pretty long 

 time, but its smell is too offensive. 



Drvinp oils To remedy the inconvenience of the separation of the oil 



fc^e wi. isuc- j^ ^i^g alkaline solution of alumine, I had recourse to drying 

 oils, or those boiled with metallic oxides. Linseed oil, 

 boiled with ceruse, minium, or litharge, by means of water 



* Annales de Chimie, vol. XLVllI, p. 233. 



