( 482 ) 
When considering the column ,cultivated” organisms, quite the 
same relations are met with as described till now: very few bacteria 
in the first portion of the small intestine ; the number increases in 
the end of it, but a vigorous augmentation appears in the Coecum, 
Processus vermiformis, and Colon adschendens, whilst in the rest of 
large intestine and Rectum again a decrease may be observed. 
Quite otherwise, however, the image becomes when viewing at 
the last column, representing the sterility-indices of the different portions 
of the intestine: whilst the sterility-index of the whole small intestine is 
169942, that index mounts in the Coecum to 972356; the increase 
in number of living organisms in the Coecum is accordingly only 
an apparent one; on the contrary, instead of an increase we find in 
the Coecum, with a more than five times greater index of sterility, 
that no less than 80 pCt. of the original number of bacteria which 
arrived living in the Coecum are dead. 
In the rest of the large intestine and in the Rectum the sterility- 
index (688310) has become a little lower than in the Coecum. It 
may become lower by an increase of the number of living indivi- 
duals, but also by the decrease of dead organisms; the latter being 
the case here. The proportion of solid substance in large intest- 
ine and Rectum has mounted to 34.26 pCt., thus more than two 
times that of the Coecum, hence, we might be expect here per mer. 
at least twice as many microscopically countable organisms. Instead 
of 2 X 68.065000, however, only 17.607000, are found, which con- 
sequently proves that a large number of dead bacteria are decom- 
posed and have disappeared, yet a considerable number of bacteria that 
had remained in the Coecum, have died, as this number should at 
least have mounted to 2 x 70 per mgr. whilst only 25 per mgr. 
were found. 
In the whole small intestine no ingesta were present. The num- 
ber of microscopically counted bacteria in the hindmost part of the 
small intestine, is in accordance with the higher rate of solid substance 
somewhat greater per mgr. than in the superior part; still the sterility- 
index of the former is much lower than in the latter. Hence, in 
that first portion there must have been a considerable dying of 
bacteria, whilst, as a matter of course, the 2™¢ part has only for a 
shorter time been free from ingesta and accordingly also contains a 
greater number of living organisms. After the passing of the ingesta 
the living organisms thus die off largely in the small intestine, so 
that the number of living individuals there may finally grow very 
small; and at the irregular distribution of the bacteria in the viscid- 
mucous substance, there may then be found relatively large sterile quan- 
