Observations on the life history of Tillina magna

B7 and B8 transferred to tap water.B7 and B8 divided once; individuals pale, and were put in fresh water.B7 encystedfor division; B8 divided twice.B7 divided three times, B8 divided once.No division; both permandy encysted.In the case of the experiments with potassium phosphate, four lines were started from the stock of BI, B2, B3, B4.Each was put in a solution containing ten drops of medium and one drop of GT FT sol. of H,PO,.B9 was left in the solution one day, BIO two days, B I I three, and B12 four days.B9 and BIO were lost, and the lines were filled in from B12.At the end of the 17th period, a second treatment was given, but this had no effect, and the lines died out at the end of the 20th period.