BAIRD &TATLOCK (LONDON) LTD. 



5617 5619 



561?T Roland Wild Calorimeter, complete as illustrated, Fig. 5617, with sensitive Fahrenheit 



Thermometer (40 to 100 F. in ^ths) nickel wire, certificate of water value and instructions 2 17 6 



5618 T Roland Wild Calorimeter as No. 5617 but with electrical ignition . . . . . . 3 15 



5619 r Roland Wild Calorimeter as Fig. 5618, electrical ignition and mechanical stirrer, actuated 



by clockwork motor, it is fired by means of dry cells or accumulator . . . . . . 550 



It may happen that the intending user has no apparatus for crushing and drying the coal and weighing the 

 amount of coal and sodium peroxide it is necessary to place in the Calorimeter and for measuring the water to ba 

 placed in water vessel. We therefore provide : 



5620 T Roland Wild Calorimeter No. 5617 together with balance of novel design in case and 

 made with two special weights, one for the coal and one for sodium peroxide. For drying 

 the fuel a well-made copper oven with gas burner or spirit lamp is provided. In addition 

 there are mortar and pestle, carrel hair brush, tweezers, watch glass, sieve, scoop, and 

 1,000 cubic centimetre glass water measuring vessel . . . . . . . . 600 



(CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



