| | | |Slight growth only in | | | | |depth. | | | | | | | | | |Gelatin-plates: Leaf-shaped| | | | |depositwith clear line sys-| | | | |tem. The entire colonies | | | | |appear much thinner than | | | | |those of the preceding | | | | |numbers. | --------+-------+-------------+--------+---------------------------+------------ [table continued] --------+-----------+----------+------+-------------------+--------------------- No. of | Growth | Growth | Best | Development | the Bac-| on | in |Growth| of | Special Remarks terium | Potatoes | Milk | at-- | Gas | --------+-----------+----------+------+-------------------+--------------------- 1 |The bacter-|Milk is |37° C | Only slight |Without doubt a var- |ium shows |not | | |iety of bacterium |only a weak|changed | | |_Coli commune_. |growth on | | | | |potatoes. | | | | |It forms a | | | | |yellow | | | | |layer. | | | | | | | | | 2 |Dirty |Milk |Room |Does not occur | -- |yellowish |remains |temp. | | |layer. |unchanged.| | | | | | | | 3 |Yellowish |Milk is |37° C |Very pronounced. |Culture-medium to |deposit |caused to | |From fifty cubic |which blue litmus |at the |curdle | |centimeters of |is added turns red. |place of |only after| |broth 6·5 cubic | |inocula- |it has | |centimeters gas | |tion. |been in | |were produced in | | |the incu- | |fifteen hours, of | | |bator for | |which 3·5 per cent.| | |four days.| |was oxygen, 10·7 | | | | |per cent. carbonic-| | | | |acid gas, and 85·8 | | | | |per cent. nitrogen.| | | | | | 4 |White, dry,|Milk is | Do. |Does not occur | -- |spreading. |changed. | | |