16 SUBSTANCES SOLUBLE IN PETROLEUM SPIRIT 



Mixture of 

 Palmitic Acid. Myristic Acid. 

 70 30 



60 40 



50 50 



40 60 



30 70 



20 80 



10 90 



100 



Mixture of 

 Myristic Acid. Laurie Acid. 



Melts at Solidifies at 



100 

 90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 

 10 

 





 10 

 20 

 30 

 40 

 -50 

 60 

 70 

 80 

 90 

 100 



Mixture of 



Stearic Acid. 3Iyristic Acid. 



100 



90 10 



80 20 



70 30 



60 



40 



54-9° 

 51-5° 

 47-8° 

 47-0° 

 46-2'' 

 49-5° 

 51-8° 

 53-8° 



53-8» 

 51-8° 

 49-6' 

 46-7'' 

 43-0» 

 37-4° 

 36-7» 

 35-l° 

 38-5' 

 41'3'' 

 43-6' 



Melts at 

 69-2° 



67-r 



65-0' 

 62-8» 



59-8' 



51-3° 

 49-5° 

 45-3° 

 43-7' 

 43-7° 

 41-3° 

 45-3° 



47-3' 

 44-5° 

 39-0° 

 39-0' 

 2,b-r 

 33-5° 

 32-.3' 

 33-0» 

 36-0° 



JIanner of Solidification. 

 Extremely fine needles. 

 Amorphous, lumpy. 

 Large crystalline lamellae. 

 Indistinct lamellae. 



>> 5» 



Amorphous. 

 Long needles. 

 Crystalline scales. 



Crystalline scales. 



Very minute crystals. 



)) » 



Amorphous. 



liarge crystalline lamellae. 

 Amorphous. 

 Amorphous, frond-like. 



» )> )> 



Crystalline needles. 

 Scaly crystals. 



Manner of Solidification. 

 Scaly crystals. 

 Distinct crystalline scales. 

 Eather less distinct crystalline scales. 

 Still less distinct crystalline scales ; 



no needles or lamell«. 

 Scaly crystallization commences ; no 



trace of needles or lamellae. 

 Amorphous, opaque. 

 Beautiful large crystalline lamellae. 

 Crystalline lamellae. 

 Indistinctly crystalline. 

 Amorphous, opaque. 

 Crystalline scales. 



Crystalline scales. 

 Still distinct crystalline scales. 

 Somewhat less distinct cryst. scales. 

 Still less distinct crystalline scales. 

 Granular, indistinct crystalline scales. 

 Almost amorphous, opaque. 

 Beautiful large crystalline lamellae. 

 Small crystalline lamellee. 

 Indistinctly crystalline. 

 Amorphous. 

 Crystalline scales. 



Crystalline scales. 



Still distinct crystalline scales. 



