190 



MR J. Y. BUCHANAN ON THE 



Table IIa. 



Table of Observations made with Hydrometers A and B ivhen jioating in the 

 Supersaturated Solution 7"225 CaCl^-h 1000 grams of Water at 19"5° C. 

 before Crystallisation. 





Hydrometer A. 









Hydrometer B. 





Series 1 (10.45 a.m.-11.5 a.m. 



)• 





Series 2 (11. 3C 



a.m. -11. 45 a.m.). 



Added 



Weight in 



Grams. 



Scale 

 Reading in 

 Millimetres. 



Specific Gravity 



calculated 



from Single 



Observations. 



Displace- 

 ment. 



Added 



Weight in 



Grams. 



Scale 

 Reading in 

 Millimetres. 



Specific Gravity 



calculated 



from Single 



Observations. 



Displacement. 



8-65 



13-7 



1-445961 



1245-71 



6-1 



7^8 



1-445905 



1245-76 



8-75 



20-9 



5972 



-70 





6-2 



16^9 



5826 



•83 



8-85 



28-1 



6034 



-64 





6-3 



25^3 



5837 



•82 



8-95 



35-6 



6044 



-63 





6-4 



34^0 



5828 



•83 



9-05 



42-8 



6033 



-64 





6-5 



42-1 



5880 



•78 



9-15 



50-4 



6015 



-66 





6-6 



50-7 



5895 



•77 



9-25 



57-8 



6039 



■64 





6-7 



58-3 



5962 



•72 



9-35 



65-0 



6049 



-63 





6-8 



67^1 



5948 



•71 



9 45 



72-4 



6037 



•64 





6-9 



75^8 



5936 



•64 



9-55 



79-9 



6001 



■68 





7-0 



83-6 



5998 



•67 



9-65 



87-1 



6028 



-65 





7i 



91-3 



6076 



•61 



Hydrometer A. 



Hydrometer B. 



Hydrometer A. 



iSeries 5 



1(12.10 p. m.-12. 25 p.m.). 



Series 4 (12.35 p.m.-12.49 p.m.). 



Series 5 (12.55 p.m. -1.5 p.m.). 





Scale 



Specific 







Scalp 



Specific 







Scale 



Specific 





Added 

 Weight 



Reading 



Gravity 

 calculated 



Displace- 



Added 

 Weight 



Reading 



Gravity 

 calculated 



Displace- 



Added 

 Weight 



Reading 



Gravity 

 calculated 



Displace- 



m 



Milli- 

 metres. 



from Single 



ment. 



in 



Milli- 

 metres. 



from Single 



ment. 



in 



Milli- 

 metres. 



from Single 



ment. 



Grams. 



Observa- 

 tions. 





Grams. 



Observa- 

 tions. 





Grams. 



Observa- 

 tions. 



1245-92 



8-65 



16-0 



1-44.5741 



1245-90 



61 



7-8 



1-445905 



1245-76 



8-6 



12-5 



1-445719 



8-75 



23-9 



5780 



-87 



6-2 



16-9 



5826 



•83 



8^7 



201 



5703 



■93 



8-85 



31-6 



5686 



•95 



6-3 



25-3 



5837 



•82 



8-8 



27-9 



5681 



■95 



8-95 



39-1 



5663 



-97 



64 



34-3 



5796 



-86 



8-9 



36-9 



5525 



1246^09 



9-05 



46-5 



5711 



-93 



65 



42-7 



5820 



-84 



90 



45-1 



5448 



•16 



9-15 



53-6 



5831 



-82 



6^G 



51-8 



5794 



-88 



91 



53-9 



5313 



•27 



9-25 



61-0 



5717 



•92 



6-7 



60-0 



5852 



•81 



9-2 



62-9 



5165 



■40 



9-35 



68-1 



5732 



-91 



6-8 



68-1 



5855 



-80 



9-3 



70-5 



5133 



■43 



9-45 



75-3 



5768 



-88 



6-9 



77-1 



5805 



■79 



9-4 



78-2 



5096 



•46 



9-55 



82-6 



.5796 



-85 



7-0 



85-2 



5838 



-82 



9-5 



86-8 



4959 



•58 



9-6.5 



89-9 



5824 



-83 



71 



94-5 



5759 



•89 



9-6 



94-7 



1 



4886 



•64 



