i22 THOMPSON YATES LABORATORIES REPORT 
TABLE II 
Cultivated Soil 
-No. - 
Description of the Field, &c. 
B. Coli 
Commune, per grm. 
Remarks 
Potato field Buildwas 
Absen t 
in 
•02 grm. 
Samples taken June 23, and plated 
June 25, 1900 
(Wet weather) 
Same field, another place 
in 
■01 grm. 
Samples taken June 23, and plated 
June 25, 1900 
(Wet weather) 
3 
Garden, growing turnips, Build- 
was, on the shore of the river 
Severn 
20^ pei 
gr 
m. (approx.) 
Samples taken June 23, and plated 
June 25, 1900 
(Wet weather) 
+ 
Ploughed field, crops just growing 
Absent 
in 
•02 grm. 
Samples 4-13 taken on June 24, 
(Wet weather) 
5 
Ploughed field, turnips 
Absent 
in 
•03 grm. 
Sample dry when analysed 
5 
Ploughed field, crops just growing 
AbZt 
in 
•02 grm. 
Sample dry when analysed 
riougneu neiLi 
Abselt 
in 
■02 grm. 
Sample wet when analysed 
g 
i lougnea neici 
in 
■02 grm. 
Sample dry when analysed 
9 
Ploughed field, crops just growing 
Absent 
in 
•006 grm. 
Sample dry when analysed 
IO 
Ploughed field, Pitchford 
Absent 
in 
■025 grm. 
Sample dry when analysed 
i i 
Ploughed field, cabbages, crops 
very small 
Absent 
■04 grm. 
Sample wet when analysed 
I 2 
Ploughed field, crops just growing 
Absent 
in 
•02 grm. 
Sample dry when analysed 
13 
Ploughed field, crops just growing 
Absent 
in 
•02 grm. 
Sample wet when analysed 
"4 
Garden, Grange - over - Sands, 
July 8, 1900 
Absent 
in 
■04 grm. 
Sample was taken from the base of 
a rose-bush, where there were 
obvious remains of manure ; a 
damp sample 
III ROAD DUST, &c. 
In all thirty-three samples of road dust and puddles were examined, the latter, 
and those of the former taken during wet weather, usually contained B. coli in quantity, 
for example, those examined on May 7 (see Table III, where the numbers must be 
considered as approximate only). The dirt was collected in sterile test tubes, weighed 
out into sterile flasks, the requisite amount of sterile water added for the required 
dilution, the whole well shaken, and 1 c.c. plated on carbolized agar. This method has 
been the one ordinarily followed, and the preceding samples of soil were analysed 
exactly in the same way. Dry samples, as a rule, contained no B. coli in the quantities 
analysed, and it is significant that when among a number of dry samples, wet ones 
were examined on the same day, the latter invariably contained B. coli (e.g., No. 18, 
L 
