172 



1859. 



Variation of 

 taring-point. 



OTTO OF ROSE. 



The results I have tabulated as under : 



TABLE SHOWING THE RESULTS OF A COMPARATIVE EXAMINATION 

 OF TWELVE SAMPLES OF OTTO OF ROSE. 



This table shows that the fusing-point of Otto of Rose, and 

 the proportion of stearoptene varies greatly in different samples. 

 But it will also be observed that there is a similarity in the 

 Otto produced in each locality. Thus, that of the South of 

 England and North of France (samples Nos. 1, 2, and 3) has a 

 high fusing-point (varying from 85 to 91), and contains a large 

 percentage (50 to 68) of stearoptene. The Otto of the South 

 of France fuses betwen 70 and 74, and affords from 35 to 41 

 per cent, of stearoptene. That of Turkey, if we may consider 



