126 



Normal Consistency. 



17. Method: This can best be determined by means of 

 Vicat Needle Apparatus, which consists of a frame K, 



VICAT NE.EOLE. 

 FIG. 2. 



Fig. 2, bearing a movable rod 7>. with the cap A at one 

 end, and at the other the cylinder II, 1 cm. (0.39 in.) in 

 diameter, the cap. rod and cylinder weighing 300 gr. 

 (10.58 oz.). The rod, which can be held in any desired 

 position by a screw F, carries an indicator, which moves 

 over a scale (graduated to centimeters) attached to the 

 frame K. The paste is held by a conical, hard-rubber 

 ring (I) f .7 cm. (1.76 in.) in diameter at the base, 4 cm. 



