Journal of bacteriology . «0 1— ^^™ ^^^^^^^p 1 ^^^^^^ r. VD0ZI9r>D099y>D0S8 3 / 218 TITRATION AND ADJUSTMENT OF CULTURE MEDIA 219 room temperature titration are in general nearer to the de-sired reaction of plus one (+1), especially in the first two half-hours—the periods of time of greatest practical interest. In chart 7 are shown not only the uncorrected portions ofBi 60 (y and 7) and Bi 120 (7 and 7) (duphcate material from CHART 7. !:«? ? ^- k Q0 / / / / 1 / Z ,.-- ^-i^^^ r /??? y —• > r // y ^ ---rf / > b;60^ %. 5t-» •food*. ^ ^^- *.*** ^^-> ^ \ lU- ^-^ / ifl r . ^^? .

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Journal of bacteriology . «0 1— ^^™ ^^^^^^^p 1 ^^^^^^ r. VD0ZI9r>D099y>D0S8 3 / 218 TITRATION AND ADJUSTMENT OF CULTURE MEDIA 219 room temperature titration are in general nearer to the de-sired reaction of plus one (+1), especially in the first two half-hours—the periods of time of greatest practical interest. In chart 7 are shown not only the uncorrected portions ofBi 60 (y and 7) and Bi 120 (7 and 7) (duphcate material from CHART 7. !:«? ? ^- k Q0 / / / / 1 / Z ,.-- ^-i^^^ r /??? y —• > r // y ^ ---rf / > b;60^ %. 5t-» •food*. ^ ^^- *.*** ^^-> ^ \ lU- ^-^ / ifl r . ^^? .^ first lot of veal), but also the efiect on the corrected portions ofthe addition of too much normal sodium hydroxid. By mis-take after the first half hour in the autoclave and the subse-quent titration, there was added to Bi 60 C /3 approximatelyfive times the amount of normal sodium hydroxid necessaryto correct it to plus one, and to Bi 120 C jS also about five times 220 BERTHA VAN H. ANTHONY AND C. V. EKROTH the right

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