131 
- Analyses characteristic of certain natural conditions in water—contd. 











































| 1 is 
{9) SAMPLE IJ.—DISTRIBUTARY | aS 
SYSTEM—A TAP NEAR CATHE- | lew 
DRAL— 1 | 1S] Bacillus. 
Bont Shs 
Hela/ele| 2 
(a) Total Lae on | e '§ = Zz = aad 
aedbede 47-030. =i iy =I ee 
(b) Bile salt’ glucose, | | Ai<|a a] Oo | 
medium— —— [ | 
) nthe 2oc.c.of |1 | | ie | 
water taken. I eae as ee) SD _J |B. Grunthal. 
Sieees 16.0. OL (|S ihc dd — ad Do. 
water taken. | 3 |- fo ea r Do. 
4tubes 5c.c.of |4].. 4 |+!-|-]-|+l-— IV | B. Cloace. 
water taken. 5 |—|-|-|-]-|- I |B. Grunthal. 
pubes 1c. of | 2) a 6 |—|—|—l—1-}— Ky Do. 
water taken. | 7.|+|- a a ee Iv | B. Cloace. 
Rapes si.c.c. of |...) 5h 3.4) =] a] —1— I | B. Grunthal. 
water taken. 9 (Se ey ee oe a I | Do. 
eH dubes 05.c¢.c.0f |..| 3 xo |+ |p| g4—)- FV | Bo Cipaes 
water taken. | ir |—|+]—|- py II | B. Coli, etc. 
ae, oe Os ee I | B. Grunthal. 
(c) Fecal bacilli in 1 c.c. and] 13 | - +|—|-— ar II | B. Coli, ete. 
upwards. 14 | -|+/—}-|-|+ It | Do. 
(d) Sporogenes milk test— 15 |+/—/—|—]—/+| IV | B. Coscoroba, 
in 20 C.c. 16 |+/—|—|-|—|+| IV | B. Cloace. 
PF { { | | 
(10) SAMPLE _VI.—WATER OF THE] 1 |4/—/+/—|/+/- IV | B. Lactis erogenes. 
RED HiLtts LakE— ones 7 
2 ra ied ie li IV | oO. 
(a) Total colonies on za 3 elapse 2 bad I\ Do. 
agar at 37°—160.  |+/- ogo be] <4 
(6) Bile salt lactose, 4 | + Ses +/- IV | Do. 
medium— |—|—— o 
1 tube 20 c.c. of |1 5 [+] —|+] ey] Pe | Do. 
water taken. | 3 
2tubestoc.c.of |2|..f © |+i—\/+/-{/+/-| IV} Do. 
water taken. oe | am 
mbes 5e-c.0f | 4).:8 7 +) —|+/—|+]-] IV Do. 
water taken. | 4 i 
5 tubes rc.c.of |..| | 8 |+/—/+/—/+/-| FV | Do. 
water taken. | | 
5 tubes ‘1c.c.of {..) 5| 9 |t/=)+)/—]7t|—| IV | Do. 
water taken. | | a 
5 tubes [On C.6* of os 5 Io |+ |—|—| —_i- | IV | B. Coscoroba. 
water taken. | | beet | | | 
(c) Fecal bacilli in 5 c.c. and b gi | 
upwards. | | 
(d) Sporogenes milk test+ fel | 
in. 20.Gc. | | 
a3 } 



(9) Same water as (8) with pollution added since water left lake. 
(10) A typical fair quality lake. Water—note, moderate number of local fecal 
organisms and preponderance of lactis erogenes. 
