As the water thus prepared can be cooled considerably below 0C. before the first ice is formed, while when ice is in the flask it freezes at 0C., the flask was in the first instance placed in a freezing mixture until the water changed into ice.
(the water; thus prepared; ) (the flask; was; in the first instance) (the first instance; placed; in a freezing mixture; T:until the water changed into ice) (the first ice; is formed; ) (the water; changed; into ice) (ice; is; in the flask) (the flask; freezes; at 0C)
the water the flask the first instance the first ice the water ice the flask
thus prepared was placed is formed changed is freezes
in the first instance
in a freezing mixture T:until the water changed into ice
into ice
in the flask
at 0C