BAIRD &TATLOCK (LONDON) LTD. 



554 



554 Wolfhugel Counting Apparatus, consisting <>i polished 

 counting plate 15 centimetres square, with quadratic 



metres .. 



555 Glass Counting Squares, divided into centimetres for 



lx M td with di.iwt 

 divisions 



-l's apparatus. No. 554 



12 6 



< < 



556 



558 



556 Cardboard Counting Squares, divided into centimetres, black, numbered in whit.' 



figures ........ CO 4 



557 Paper Duplicates of above, numbered for registering colonies 



558 Esmarch's Counting Apparatus, on stand 



(XT.!./ tO 6 

 18 



559 



560 







per doz. 004 



559 Pake's Enumerating Discs, on paper 



(See Journal of Pathology and Bacteriology, July, 1896.) 



E>0 Counting Disc, of glass, in brass frame, for counting the colonies in Petri dishes each 10 6 



ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



119 



