270 



Profs. Percy Frankland and Marshall Ward. 



cd 

 S=l 



O 



CD 



d 



CD 



o 



EC 



Kemarks. 



Pure anthrax. Not fewer 

 than in last case. 



As above j not fewer than 

 before. 



One or two yellow colonies 



were not anthrax. 

 About same number as last. 

 Nothing visible on 4th day. 



Calculated average 

 number of bac- 

 teria per 1 c.c. 

 of water. 



Anthrax. 



125,000 



125,000 



to 

 150,000 



p 



500,000 

 p 



2,400,000 

 1,200,000 

 300,000 

 100,000 



Total. 



125,000 

 ? 



125,000 

 tin 



150,000 



500,000 



2,400,000 

 1,200,000 

 300,000 

 100,000 



Number of ] 

 colonies on plate. 



Anthrax. 



5000 



Too 

 many to 



count 



5000 

 to 



6000 



Too 

 many to 

 count 



1000 



2400 

 3600 

 1200 

 1200 



Total. 



5000 



Too 

 many to 



count 



5000 

 to 



6000 



Too 

 many to 



count 



1000 



2400 

 3600 

 1200 

 1200 



Diluted or 

 not. 





§ .1 

 2 ~ - ~ 



•is jo 



Quantity 



used for 

 plate. 



O J | 0|J u > J» 





Charge 



anthrax 

 used. 



<D 

 (J 



s g 5 - = & a 



CO 1-3 



Number 

 of days 



was in- 

 cubated 

 at 30° C. 



CO CO CO 



CO lO lO CO CO CO CO 



Number 

 of days 



water 

 stood at 



20° C. 



O O r-H 



p-i CM CM CO CO 1> 1> 



Date of 

 making 

 plate. 



Mar. 22 

 „ 22 



„ 23 



CO TjH lO Ol Ol 

 CM CM CM CM CM CM CM 



Date on 

 which 

 water 

 was 



collected. 



CM 

 <M 



«3 

 2 





