1864.] 



Prof. Guthrie on Drops. 



45a 



was rubbed with sodium-amalgam and washed with clean mercury. A 

 few strips of similarly prepared platinum foil being bent over the edge and 

 pressed close to the sides of the cup, the mercury could be handled simi- 

 larly to the other liquids. 



The following Table VII. shows, — 



1 . The liquids examined. 



2. The number of drops which were weighed. 



3. The weights found. 



4. The mean weights of single drops. 



5. The observed specific gravity at the given temperature. 



6. The relative sizes of single drops. 



Table VII. 

 T=26°C. 



Radius of curvature of platinum cup = 11 '4 millims. 



Name and formula 

 of liquid. 



2. 



Number 

 of drops, 



3. 



Weight 

 of drops. 



Mean weight of 

 single drop. 



Specific 

 gravity. 



6. 



Relative size of 

 single drop. 



Water . 

 HO. 



Grlycerine 



Butyric acid 



Mercury , 



Benzol . . 

 Turpentol 



Alcohol 



C, H, O,. 



Acetic ether 



Acetic acid . . . . 



HO C.Hg O3 



grm. 

 2-97031 

 2-9923 

 2 9472 Y 

 2-9603 

 2-9533 J 

 2-5496 1 

 2-5576 \ 

 1-2877 J 

 1-1616 

 M630 

 1-1634 

 7-96551 

 7-8984 I 

 7-7977 I 

 7-8197 J 

 0-95141 

 0-9488 I 

 0-9579 f 

 0-9644 J 

 0-8675 1 

 0-8656 \ 

 0-8653 J 

 0-7890 

 0-7910 

 0-7896 

 0-8214 1 

 0-8300 \ 



0- 8384 J 



1- 3636 1 

 0-9055 \ 

 0-9095 J 



grm. 

 0-14828 



0-12804 

 0-05813 



0-78703 



0-04778 



0-04331 

 0-03949 

 0-04149 

 0-04540 



1-0000 



1-2452 

 1-0017 



0-14828 



0-10280 

 0-05803 



13-5728 0-05798 



0-8645 



0-8634 

 0-8163 



0- 8930 



1- 0552 



0-05527 



0-05016 

 004960 

 004647 

 0-04302 



film of oxygen ; and the removal of this might alter the adhesion between the mercury 

 and platinum ; but such a film could scarcely exist in vacuo or in another gas. 



2m2 



