Intelligence and Miscellaneous Articles. 1 57 



the third bulb D, a portion of fluid generally passes into the tube G 

 from the rotary motion induced in the fluid in C. 



The dotted lines indicate the height of fluid in the bulbs, and this 

 quantity is quite sufficient for the condensation of all the ammonia 

 likely to be formed. I would remark, that if during the progress of 

 the combustion a cessation of the production of gas should occur, 

 the construction of the apparatus is such as to prevent the whole of 

 the acid ever being carried over into the bulb C, so that on the evo- 

 lution again commencing no fear need be entertained for the com- 

 plete condensation of the ammonia. 



It only remains for me to add, that though this new form of ap- 

 paratus is not so readily rinsed out as the original one of Messrs. 

 Varrentrapp and Will, no great inconvenience is experienced from 

 that cause, as the acid can, at the close of the operation, be easily 

 caused to flow into the bulb C and out at the tube G, by properly 

 inclining the bulbs, &c., and when this is done water or alcohol may 

 be introduced by a pipette through the limb H. 



From the Proceedings of the Chemical Society. 



ON THE DETECTION OF COTTON IN LINEN. BY G. C. KINDT. 



This subject has frequently engaged the attention of commercial and 

 scientific men ; many experiments have been made in order to detect 

 cotton thread in linen ; many processes have been recommended, but 

 none have hitherto proved satisfactory. I was therefore much sur- 

 prised when a stranger, a few weeks ago, showed me a sample of 

 linen from the one-half of which all the cotton filaments had been 

 eaten away. He had obtained it in Hamburg, and asked me whether 

 I could give him a process for eflfecting this purpose. Now since, 

 as far as I am aware, nothing has been published on this subject, 

 and it is of very general interest, I consider it a duty to communi- 

 cate the results of my experiments. I had already observed, in ex- 

 perimenting with explosive cotton, flax, &c., that these two sub- 

 stances behave somewhat diflferently towards concentrated acids ; 

 and although it has long been known that strong sulphuric acid con- 



