BAIRD &WLOCK (LONDON) LTD. 



491 492 



490 Glass Benches, for arranging glass plates and slides in tiers in damp dKunI,,,,. ,-, , !/. 036 



491 Glass Benches, for same purpose, in one piece . . pe,. ,j 07 040 



492 Copper Stands, riveted, for supporting plates and slides . . tn < ,, 



495 



497 



493 Tripod Levelling Stand, of polished hard wood, with brass adjusting M-IVWS 



plate, spirit level and basin, as illustrated, extra, see Nos. 494 and 495) . . each 076 



494 Glass Plate, for tripod stand, 12 by 12 by g in., polished edges 



495 Circular Level, for tripod stand 



496 Circular Level, for tripod stand, i in. diani. 



497 Test Tube Stand, of copper, for immersion in water bath, with holes nuiui 



A. Diameter, 5 in. 



B. j\ in. 



030 

 056 

 1 



030 

 040 



.CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS 



107 



