[BULLER & LOWE] MICRO-ORGANISMS IN THE AIR OF WINNIPEG 51 
RESULTS. 
The results of the experiments are given in the appended Table. 
The first column gives the date of each experiment, the second the 
number of micro-organisms in 10 litres of air, the third the number 
falling per square foot per minute, the fourth the ratio of the number 
falling per square foot per minute to the number in 10 litres of air, 
the fifth the temperature at the time of the experiment in degrees 
Centigrade, and the sixth remarks upon the weather. Four degrees 
of wind velocity were recognised: slight, moderate, strong, and gale. 









| Ratio of | 
the number | 
Number | falling per| Temper- | 
Date Number | falling per| sq. foot ature | Remarks 
of in sq. foot | per min. | in degrees upon the 
Experiment] 10litres | per min. to the Centi- | weather 
number grade 
| in 10 litres 
1908 
Apri 6. 6 247 | 51 —6 Wind N.E., strong 
RO 7e re Sen ar) ve +2.5 “ §.W., stronger 
Sn OM ae 4,180 | a +4 « N.N.W., gale 
pee A, Le 436 at 13 ‘« §$,. moderate 
de LE are 30 8,506 283 | 0.0 “ N., gale 
cmt OAD ere es 22.5 407 | 13.6 10 “ E., slight 
Tih Oy le oman 0.0 206 | 2 ‘°° N., strong, rain 
| | on 24th and 25th, 
| | | snow on 26th 
eee ees = . 6M | ee 3 Wind, N., moderate 
OS Le 15 124 | 8.2 4.5 6 NW. slight 
OO me 1,839 6.5 | “ N.W., moderate 
May 1... 25 821 ST 3 | 4 N.W., strong 
ae ms 1,641 | Te 525) LL NW; slight 
ae vf PEGA | 13 | “ NE, slight 
RSA 13 1,205 | 92.7 11 | “ N.E,, slight 
i 37 2,304 | 62.1 15.5 | “ N.E., moderate, 
experiment made 
immediately be- 
fore rain 
TEST 15 1,551 13.4 22.5 “  S.W., strong, 
showery since 11th 
CAE tt 16 247 16.5 18 Wind, 8., moderate, 
rain from morning of 
11th to 22nd 
AE: Se 46 1,529 33.2 20.5 |Wind, N., moderate 
JUNE. LL. 40 203 5.07 25 # $S.E., moderate 
Se at 3 19 527 22.7 8.5 “« N.,strong, frosts 
é on 6th and 7th 



Sec. IV., 1910. 4. 
