124 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



motility is not one of the characters considered — in the mean- 

 time at least. 



The Tables, Appendix I, give the results of these 

 subcultures. It has been thought necessary to give the 

 individual results in detail. The last Table is a summary of 

 the results of examination of 72 organisms made previously, in 

 former analyses. In these analyses indole formation was not 

 observed, so that the results are not strictly comparable with 

 those of 1914. But, on comparing them, it is fairly easy to 

 see that the same species of bacteria have been isolated ; and 

 I have little hesitation in incorporating these former results 

 with the latter ones, so as to present a first provisional descrip- 

 tion of the relative abundance of the different species of lactose- 

 fermenting micro-organisms inhabiting sewage-polluted shell- 

 fish. In attempting to identify the species, I have made 

 use of MacConkey's table given in the paper already cited. 

 I reproduce this table here for easier reference. Not all 

 MacConkey's tests have been cited, since I have only applied 

 some of those used by him. But a rough comparison of his 

 results and mine are clearly possible. 



Lactose-fermenting Bacilli studied by MacConkey. 







i 

















© 

 m 

 o 



% 



O 



© 



m 

 O 



1 



© 



o 



©* 

 'o 



p 



©" 



•1 



o 



< 



a 



i— i 



O 



TO £j 



2? «8 



© M 



>> 



* 



3 



Name. 





+ 











+ 



_ 



+ 







_ 



B. acidi lactici. 





+ 



— 



— 



— 



+ 



— 



+ 



+ 



B. levans. 

 (B. griinthal. 



- B. sulcatus gasoformans. 

 [B. castellus. 





+ 



— 



— 



— 



— 



+ 



— 



+ 























+ 



_ 



_ 



— 



_ 



+ 



— 



_ 



B. vesiculosus. 





+ 















— 



B. coli mutabilis. 

 i B. coli communis. 





+ 



~ 



+ 







+ 





+ 



1 B. cavicida. 





+ 



— 



+ 



— 



— 



+ 



— 



— 



B. schafferi. 





+ 



+ 



+ 



+ 



+ 



+ 



+ 



— 



B. oxytocus perniciosus. 

 [B. rhinoscleroma. 

 \B. friedldnder. 





+ 



+ 



+ 



T 







— 







+ 



+ 



+ 



— 



— 



+ 



— 



— 



B. neapolitanus. 

 (B. lactis aerogenes. 





+ 



+ 



- 



+ 



— 



— 



+ 



— 



\ B. dysenteriae vitulorum. 

 [B. capsulatus (Pfeiffer). 





+ 



+ 



— 



+ 



— 



— 



± 



— 



B. gasoformans non-liquefaciens. 





+ 



+ 



— 







— 



+ 







— 



B. coscoroba. 





+ 



+ 



— 



- 



— 



— 



+ 



+ 



B. cloacae. 





+ 



+ 



- 



+ 



- 



+ 



- 





Nos. 100, 101. 



