BAIRD &TATLOCK. (LONDON) LTD, 



w 





4980 



4980 T Refractometer after Pulfrich, by Zeiss, for ordinary work in physical and chemical 

 laboratories, with full directions and all necessary tables, with one GeisslerH tube No. i /. 



A. Spare Geissler tube . . . . . . . . 



B. Prisms I., II., and IV. .. 



C. Heating apparatus .. .. .. .. .. .. . . 



D. Ordinary thermometer, 0-75 C. . . . . . . . . . . 



E. Thermometer, 0-50 C. in 3^ 



F. Thermometer, 50-100 C. in T \j 



G. Heating-spiral (Fig. 4972) . . 



H. Water-pressure regulator (Fig. 4973) 



I. Two bottles, with cap and rod . . . : 



J. One bottle monobromnaphthaline . . 



K. One curvature glass gauge 



L. One sodium burner, with one platinum ring 



Price of complete instrument . . . . . . 



4981 T Extra prisms (B) for Refractometer No. 4980. 



No. .. .. .. .. III. 



Price 3 10 



23 15 (I 



8 ( I 



819 lj 



2 15 <! 



43 2 



V. 

 480 each. 





CROSS STRET HATTOTST GARDEN, E-C 



