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After 1 day the tube seemed one mass of minute specks. 
After 2 days a number of minute spheres appeared and a 
turbid band appeared near the surface of the gelatine. 
After 3 days spheres had increased in size, a number of 
discs of gas appeared. 
After 4 days the spheres were disappearing, the surface 
of the jelly was becoming liquid (these spheres did not leave, 
a deposit). 
After 8 days the surface layer was quite liquid but the 
rest of the jelly was firm, and there were still left a number 
of discs of gas and a number of minute spots, smell offensive 
Specimen 9. — 25 cc. gelatine + 25 cc. Stockport water 
supply + 5 mgms. sodium phosphate. 
After 1 day a number of minute specks appeared and a 
few small discs of gas. 
After 2 days these discs of gas were getting larger, and 
on the third day the tube was one mass of discs of gas. 
After 5 days the jelly was liquid and the discs of gas 
rose to the surface when shaken, smell disagreeable. 
Specimen 10. — 25 cc. gelatine + 25 cc. Medlock water 
-j- 5 mgms. sodium phosphate. 
After 1 day a number of spots appeared dispersed through- 
out the jelly. 
After 2 days these spots were more decided and a distinct 
turbid band appeared at the surface of the jelly. 
After 3 days a number of flattened discs of gas appeared, 
surface layer semi-liquid and turbid. 
Specimen 11. — 25 cc. gelatine 4* 1 cc. hay infusion + 24 
cc. distilled water + 5 mgms. sodium phosphate. 
After 1 day the surface layer of the jelly was altering, 
the layer was becoming turbid and liquid. 
After 2 days the alteration was still more advanced, but 
the surface layer was not yet liquid. 
After 3 days the surface layer was liquid. 
After 7 days a great deal of the jelly had become liquid, 
