ABSTRACT
Glaucoma was cultured in various concentrations of bacteria which were kept as constant as possible.
The rate of disappearance of the bacteria was a function of the concentration of the Glaucoma.
In low concentrations of bacteria the rate of feeding of the Glaucoma was a function of the concentration of bacteria.
In high concentrations of bacteria the Glaucoma were able to find almost as much food as they could take in; so that the rate of feeding tended to become independent of the concentration of bacteria.
Counts of food vacuoles showed that the rate of feeding never became quite independent of the concentration of bacteria. For every increase in the concentration, up to at least 8,000,000 bacteria per cu. mm., there was an increase in the rate of formation of food vacuoles.
High concentrations of bacteria did not inhibit the growth or the reproduction of the Glaucoma.
When the concentration of bacteria was less than 600,000 per cu. mm. the Glaucoma were semi-starved and both their size and their rate of fission was dependent on the concentration.
Between concentrations of 600,000 and 7,000,000 bacteria per cu. mm. the rate of growth in size, but not the rate of fission of Glaucoma, was influenced by the concentration.
The generation-time was constant throughout this range at between 2-3 and 2-4 hours.
