EXPERIMENTS ON THE WATERPROOFING OF BRICKS, ETC. 735 
They were again soaked in similar oils. 
Date. 
Experiment. 
Boiled Oil. 
No. 1. 
Raw Oil. 
No. 2. 
Blue Oil. 
No. 3. 
Not Oiled. 
No. 4. 
1889. 
lb. oz. 
lb. oz. 
lb. oz. 
lb. oz. 
Nov. 11 
After being in oil for 48 
hours, the additional oil 
absorbed was 
0 2 
0 2 
0 8 
not oiled 
or total oil absorbed 
0 ID 
0 lli 
0 12J 
Nov. 11, 
1890, to 
Aug. 5, 
Exposed on roof to all 
weathers for 003 days — 
result 
loss 0 1 
loss 0 3 
loss 0 8 
1892 
Aug. 6 
In water 24 hours — result . . . 
nil 
gain 0 1 
gain 0 9 
gainO 91 
1893. 
Sept. 5 
After exposure on roof for 7 
months and indoors for 
G months the difference 
was 
nil 
nil 
loss 0 12 
loss 0 9 
Sept. 6 
In water 24 hours 
nil 
loss 0 (H 
gainO 11 
gainO 9 
Dec. 7 
Exposed on roof for 92 days 
difference 
nil 
gain 0 0i 
loss 0 11 
loss 0 10 
Dec. 11 
In water 90 hours — dif- 
ference 
gain 0 1 
gain 0 1 
gain 0 9i 
gainO 121 
Dec. 11 
to 
In a dry place for 385 days — 
difference ... 
loss 0 1 
loss 0 91 
loss 0 14 
Dec. 31, 
1894 
Jan. 4, 
1895 
They were soaked in water 
for 24 hours under pres- 
sure of 21 inches water, 
wiped with a cloth, and 
weighed at once, when the 
weights were 
9 12 
9 11 
9 8 
9 7 
Difference 
gain 0 1 
gain 0 1 
gain 0 13 
gainO 14 
EXPERIMENTS WITH SANDSTONE CUBES, 8 x 8 x 8". 
These were expressly prepared from the best Pyrmont stone. 
Date. 
Experiment. 
Boiled Oil. 
No. 1. 
Raw Oil. 
No. 2. 
Blue Oil. 
No. 3. 
Not Oiled. 
No. 4. 
1889. 
lb. oz. 
lb. oz. 
lb. oz. 
lb. oz. 
Oct. 3 
Original weight 
18 3 
18 5 
18 (5 
18 
Oct. 3 
After being soaked in oil for 
15 hours — oil absorbed ... 
gain 11 
gainO 11 
gainO 31 
Oct. 30 
In water for 24 hours — 
difference 
nil 
gain 0 01 
gainO Of 
gainO 6 
Nov. 3 
After standing for 4 days 
(dry weather) — difference 
nil 
nil 
loss 0 51 
Nov. 4 
In water for 24 hours 
nil 
nil 
gainO 01 
gainO 51 
Nov. 14 
Exposed to the air for 10 
days 
nil 
loss 0 01 
loss 0 2 
loss 0 G 
Nov. 15 
In water for 24 hours 
nil 
gain 0 Oj 
gainO 2 
gainO G 
1890. 
July 7 
After being exposed to all 
weathers for 274 days ... 
loss 0 11 
loss 0 1J 
loss 0 11 
loss 0 6 
Oct. 14 
After being in a dry place 
for 91. days 
nil 
nil 
loss 0 21 
Oct. 30 
Weighed again after 14 days 
nil 
nil 
loss 0 1 
... 
Oct. 31 
In water for 24 hours 
gainO 1 
gain 0 1 
gainO 2h 
gainO 41 
Nov. 11 
JAfter 11 days in a dry place 
loss 0 1 
loss 0 11 
loss 0 01 
loss 0 4 
