Method o 

 stirring. 



3s 



1 



o oo o oo o 



i 00 OS r-H t-^ d SO O 



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^ C5 O rH rH T 

 CO -5< T(< * 



^a2i 



Initial 

 mpera- 

 ture. 



Room 

 tempera- 

 ture. 



Initial 

 mpera 

 ture. 



o oo oo 



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o o o o oo o 



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heated to 15 

 t heated to 

 heated to 15 



a-ssSfe 

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 8|||a 



o =? 



sa 1 



II 



a 22 



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to*"" 



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Us ! ?siiSc1^'^gjgi^i 



si 



lig 



i - ^ 



s 



Room 

 tempera- 

 ture. 



i CO iC 1^ -O 00 1^ t-- 



lOOOOOOOOOO 



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