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in water, as well as devoid of smell and taste; but in its com- 
mercial condition, and as used in lamps, its odour is strong and 
the reverse of pleasant. 
Experiment No. 2.—January 13th, 1886, I had an American 
bucket fitted with a wooden tap, it was then filled with pump 
water, in which were put 12 drops of paraffin to each quart. 
A miniature hatching tray was placed beneath this tap, and 
into which a constant dripping from the bucket was kept up. 
Fifteen trout eggs were deposited in the tray; the supply of 
water similarly mixed with paraffin was kept up until the 16th, 
when the eggs were removed to clean water. On March 3rd 
one died, while none lived to be hatched. 
ExprrimMent No. 3.—January 16th, fifteen more eggs were 
transferred into this miniature hatching tray; on the 17th 50 
minims of paraffin and 8 quarts of fresh water were put into 
the bucket; on the 18th, at 5.30 p.m., filled up the bucket with 
clear water; on the 19th, added 8 quarts of water and 100 
minims of paraffin; this was continued until the 23rd, when 
the eggs were transferred to tray No. 7, apparently all well. 
On February 6th one died, seven on March 38rd, one on the 4th, 
one on the 7th, and none hatched. 
Experiment No. 4.—January 26th, 10 eggs were transferred 
into this small hatching tray, and 8 quarts of water with 150 
minims of paraffin were put into the bucket; 28th, filled up 
with clean water; 29th, added 8 quarts of water and 150 
minims of paraffin; 31st, fresh water; February Ist, 8 quarts 
of water and 200 minims of paraffin; 2nd, fresh water; 3rd, 
transferred to tray 7, apparently all well. On March 8rd, one 
died, one on the 23rd, one on the 24th, one on the 25th, one 
hatched on the 28th, but none of the remainder. 
Experiment No. 5.—February 3rd, 10 eggs placed in the 
small tray, and 8 quarts of water and 200 minims of paraffin 
in the bucket; 5th, filled up with clean water; 6th, ditto; 7th, 
put 200 minims of paraffin and 8 quarts of water in the bucket; 
9th, added 150 minims; 10th, ditto; 11th, clean water; 12th, 
ditto; 13th, 150 minims of paraffin to 8 quarts of water, con- 
tinued to the 19th, when 200 minims of paraffin were used, 
