Quarterly journal of microscopical science . xtracts. In the extract from rubbed stomachs theactivity of catalase invariably decreased right to its completedisappearance, which was established by us on the thirtiethday. In tlie parallel experiment with intact stomachs the 2- h ?« > O .6 •S^Bp gl •sXBp £ i5 = § aflspg g ^= -rf«p, | | | | | | | I? SABp f; — SABp £ ?sJHf? o 3 5 •nff _ ?N t^. | a ^ s DQ OQ — 0Q « g — y. | g s a 7 ?A —i- ?a- = t« E r- — , Z. f. — ~- ~ - - = - — E. ~ .- — . _ . - ?. - - - Z- - a — ? — — ;i s * :_! _ H - ?- - C — r~ i- x x — —. c ti -i 524 E. N. PAVLOVSKY A
Quarterly journal of microscopical science . xtracts. In the extract from rubbed stomachs theactivity of catalase invariably decreased right to its completedisappearance, which was established by us on the thirtiethday. In tlie parallel experiment with intact stomachs the 2- h ?« > O .6 •S^Bp gl •sXBp £ i5 = § aflspg g ^= -rf«p, | | | | | | | I? SABp f; — SABp £ ?sJHf? o 3 5 •nff _ ?N t^. | a ^ s DQ OQ — 0Q « g — y. | g s a 7 ?A —i- ?a- = t« E r- — , Z. f. — ~- ~ - - = - — E. ~ .- — . _ . - ?. - - - Z- - a — ? — — ;i s * :_! _ H - ?- - C — r~ i- x x — —. c ti -i 524 E. N. PAVLOVSKY AND E. J. activity of the same ferment, on the contrary, sharply increasedwith the duration of infusion of the extract. Thus, alreadyafter one day, the active power of catalase increases nearlyfour times, and on the third day nearly six times ; onlybeginning from the seventh day the activity began to decreasesharply. Curve lit/ 2 3 4 37 30<tajs V^%/a. **pw No 21 &2J 12 30 da vs. (une representing the variation of the activity of catalase. accordingto the length of infusion of the intestine and in connexion with the methodof preparation of the extract (scries of experiments nos. 17, 20, 21. SeeTable III). Such a difference in the activity of catalase in the twoparallel experiments described is due, in our opinion, to themode of preparation of the extracts. When the stomach isfinely minced and rubbed, and the cells of its tissues destroyed,a maximum quantity of catalase is freed which graduallybecomes inactivated while the extract stands. In extractsfrom intact pieces of the stomach in which but a small number ALIMENTARY CANAL IN THE BEE 525 of cells were destroyed, when it was cut into parts a smallerquantity of ferment passes into the solution at once, its activitysharply increasing. This increase may be explained in twoways. Either the catalase continues to be produced by theintact cells of the
Size: 1887px × 1324px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, bookpublisheroxfor, bookyear1853
