. Journal. 9 ..... 1295 . 13-03 Differ! di i from ^vei 013 - .... ....? tint 0-6 0-08 null .. (ill 013 . o-oo 05 .... 006 05 Ai erage 0-08 The following is the complete apparatus used (Fig. 1).It consists of an apparatus for generating hydrogen, agasometer, and combustion tube with accessories ; A is abell jar 67cm. high and 10cm. wide, bung in a cylinder18cm. wide and 65cm. high, filled with dilute sulphuricacid. The-bell jar is closed at the bottom with aperforated lead plate, which rests on two glass roilsplaced in perforations in the glass; above the had plateis a layer of fine gravel 13cm
. Journal. 9 ..... 1295 . 13-03 Differ! di i from ^vei 013 - .... ....? tint 0-6 0-08 null .. (ill 013 . o-oo 05 .... 006 05 Ai erage 0-08 The following is the complete apparatus used (Fig. 1).It consists of an apparatus for generating hydrogen, agasometer, and combustion tube with accessories ; A is abell jar 67cm. high and 10cm. wide, bung in a cylinder18cm. wide and 65cm. high, filled with dilute sulphuricacid. The-bell jar is closed at the bottom with aperforated lead plate, which rests on two glass roilsplaced in perforations in the glass; above the had plateis a layer of fine gravel 13cm. thick, and the rest istilled with granulated zinc. On opening the screw cock,acid ascends into the bell-jar, the generated hydrogenpassing through the U-tube, which is filled with soda-lime, on its way to the gasometer, the construction ofwhich will lie dear from the drawing. It is only neces-sary to remark that the cylinder is weighted with lead atthe top to obtain the necessary gas pressure. The wash-. I. whole during the experiment at a constant temperature,lor the estimation about -jtigrm. of ammonium sulphate,oi lOgrm. of ammonium- or potash-ammonium super-phosphate, should lie taken, mixed in a liter flask withdistilled titer, anil well shaken for half an hour; the bottle His half-tilled with water, enabling the gas streamto be observed ami regulated bj the Bcrew cock (. Theci mbustion furnace needs no description. The wrought-iron tube which is used is 95cm. long and 17mm. wide,and projects. 17cm. in front of and 26cm, behind the Feb. 28,1885.] THE JOURNAL OF THE SOCIETY OP CHEMICAL lXIHSTUY. furnace. The ends are closed with India-rubber corks :in the front part of the tube, about from themonth, i- placed a 12cm. Inn;; layer nf coarse ami notfused soda-lime held together in front by an asbestoswad, and behind l>y a piece of iron wire gauze rolledtogether. This tube will serve for about 100 flask (• is used to contain the titrated acid
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
