HYGIENIC LABORATORY METHOD 151 
not found it necessary to use cotton plugs in the seeding tubes. They 
are sterilized in paper-lined wire baskets, with the closed end of the 
tubes up. 
TABLE XI 
(FOR DILUTIONS)—STOCK 5 PER CENT SOLUTION 
[5 c.c. Disinfectant-+95 c.c. Distilled Water =Solution A] 
cc c.c oc cc ce ec. 
of dist of dist of dist 
A. water A. water A water, 
1: 20=20 + QorlO0 — 0O or4 + OQ 
1: 25=20 + 5orl10 + 24or4 + iI 
1: 80=20 + l0orl0 + 5 or4 + 2 
1: 35=20 + ls5ori0 + 7sor4 + 8 
1: 40=20 + 200ori0 + 10 or4 + 4 
1: 45=20 + 25orl0 + i12;0r4 + 5 
1: 50=20 + S00orl0 -+ 15 or4 + 6 
1: 55=20 + ss5orl0 + 17s0or4 + 7 
1: 60=20 + 400r10 + 20 or4 + 8 
1: 65=20 + 45o0r10 + 22io0r4 + 9 
1: 70=20 + 500or10 + 25 or4 + 10 
1: 70=20 + 50 orl0 + 25 or4 + 10 
1: 80=20 + 60 orl10 + 30 or4 + 12 
1: 90=20 + 70 orl0 + 385 or4 + 14 
1:100=20 + 80 0orl0 + 40 or4 + 16 
1:110=20 + 90 orl0 + 45 or4 + 18 
1:120=20 + 1000r10 + 50 or4 + 20 
1:1389=20 + 1100rl10 + 55 or4 + 22 
1:140=20 + 1200rl0 + 60 or4 + 24 
1:150=20 + 1300rl0 + 65 or4 + 26 
1:160=20 + 1400rl0 + 70 or4 + 28 
1:160=20 + 1400r10 + 70 or4 + 28 
1:180=20 + 1600rl0 + 80 or4 + 32 
1:200=20 + 1800rl0 + 90 or4 + 36 
1:200=20 + 1800r 4 + 36 or2 + 18 
1:225=20 + 2050r 4 + 41 or2 + 204 
1:250=20 + 2300r 4 + 46 or2 — 23 
1:275=20 + 2550r 4 + 51 or2 + 254 
1:300=20 + 2800r 4 + 56 or2 + 28 
1:325=20 + 3050r 4 + 61 or2 + 380% 
1:350=20 + 383800r 4 + 66 or2 + 33 
1:375=20 + 38550r 4 + 71 or2 + 354 
1:400=20 + 3800r 4 + 76 or2 + 388 
1:450=20 + 4800r 4 + 86 or2 + 438 
1:500=20 + 4800r 4 + 96 or2 + 48 
