NOiES.
Dez& for Xcndiiig “Nesslerircd” Aiiiiiioriin Tiibcs in Water Aiialysis.-Tlie illnstratioii shown herewith reqiiires but little explanation. Two disks of brass inch thick and 6% inches in diameter arc joined by twelre tubes of brass l’;/lc inch in ?iiside diameter and Q;,< inches i n length. The glass “Nessler” tubes, which are inch i n diameter aiid 8 indies to the jo cc. mark, just fit these tubes and are kept 11-om falling thro’ugh the open bottoms by thc lioles i i i the lower bras: disk,hcinq sliglitlv smaller than the dianieter of the h a s s tubes.
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