Q 



















' Note.—Total disappearance of lactose fermenters. 
BoTTOM.—30-9-II. 
Glucose. } Lactose. S/Sis yeh ies = Name 
Ol/O| SIS] | Ola or 
SISlSl|")S/S] Number. 
I 20 | 1 | Nil NIG IAI Sle lala 
2 10 | 2|Nuial i ay 
3 5 3 | Nal 1 |+|—|+|—|+|—|~—| Lacts eregenes, 
3 I 3 | Nil 21) | Fl =| eh — Do. 
3 oe 3 | Nal 2 ch) lar +|—|- Do. 
3 "05 3 | Nal Pe Nas Ole a [nae [cc ee bs Do. 
3 03 3 | Nal 5 eel a = Do. 
2 ‘Ol 2 I 6 |+F}-|+/-|+}-1- Do. 
3 005 2 I 8 [Ay +) +! —| +/-|—| 67. 
3 003 I 2 9 |+|—|+|-|+|-—|-| Lactis erogenes. 
3 oor | Nil| 3 fo. A) =l4) apa Do. 
005 
SURFACE—5-I0-II. 
: ti os | Re 
Glucose. | Lactose. || leo ae ee Name 
we RS = B= 1 iO Fa or 
} Sle s/Z\~ |e] Number. 
I 20 1 |NijNi\| 1 |G le lee A 
B IO 2|Nil|Niu| 2 \)|——\— eae Serna ea 
3 5 BN tL NG | 3 1 | 
3 I = Ne INGE) 8 ete | 
3 “2 BAN Te INGE a he 
3 “OF | Nal 3 Na). 3 3 = 
3 Og (Nae 3h NG) aN A Nil 
: “Ol I 2 Nal) 3 10O 
3 aOR | Naw | 3 PNG) 3 7 
3 003 | Nil) 3] Nid) 3 | 8 aS 
3 oor | Na} 34Ni| 3 9 | 
T INilimoo (24 
A description has already been given of certain experi- 
ments made in the large pond in the compound of our Jabora- 
tory. It will be remembered that the whole of this tank 
was carefully polluted with a mixture of cowdung, human 
feces, septic tank effluent, etc.,and after the addition of 
sewage a series of samples were taken at various inter- 
vals. Unfortunately the results of these experiments are 
not so satisfactory as they might be for several reasons :— 
(1) The fecal material was obtained during the hot 
weather, when, as we have already pointed out, the number 
of varieties of organisms present was small. 
