45 
I was greatly aided by the kindness of Mr. Macleod, the 
Sanitary Inspector for Glasgow, who obtained for me samples 
of waters from various houses situated in the lower parts of 
the town. 
The results are calculated as follows 
Table H. 
Ammonia and nitrates found in various samples of water. 
Mgms. per Litre=Parts per Million. 
i. 
ii. | iii. 
iv. 
V. 
vi. 
vii. viii. 
xi. 
X. 
xi. 
xii. 
Free Ammonia 
Albumenoid Do. ... 
Nitrogen as Ni- ) 
trates & Nitrites, j 
•005 
•092 
•309 
•085 
•120 
•463 
•023 
•080 
•082 
•321 
•015 
•090 
•360 
. 
•015 
•080 
•20 
•010 -035 
•085. -085 
•258 ... 
•015 
•070 
•284 
•075 
•065 
•306 
*200 
•370 
*414 
*045 
•090 
These samples were obtained from the following situations. 
No. 1. From main pipe. No. 2. From cistern in same 
house, little used. No. 3. From cistern in house similar to 
No. 2, but water generally used. No. 4. From pipe leading 
directly out of the bottom of cistern in well-situated dwell ing 
house. No. 5. From cistern in smaller dwelling house. 
No. 6. From small cistern supplying part of a dwelling 
house only. No. 7. From public well supplied by Loch 
Katrine water contained in a wooden cistern closed at the 
top. No. 8. From cistern situated just under the slates in a 
house in a lower locality than any of the preceding . No. 9. 
From cistern over water-closet in a dwelling house. No. 10. 
From cistern similar to above. No. 11. From the cistern 
same as No. 9, but after stirring up the muddy deposit at 
the bottom. No. 12. From cistern near the slates in a 
house where there had been two cases of fever and where the 
water ivas complained of. 
Omitting for the present No. 11, it is found that No. 2 
sample yields the highest number for free and for albumenoid 
ammonia, also for nitrates. Now this sample was taken 
from the cistern of a house in which the pipes have been 
recently entirely renewed, and in which the pipe leading 
from the water-closet to the main drain is thoroughly venti- 
