. Observations on the Distribution of Fat-Soluble Vitamines in Marine Animals and Plants . tation at Port Erin by H. H. Thomas andS. H. Wadham, of the Botany School of Cambridge. The slgdQ were broughtto us in fresh condition, and given partly in fresh and partly in driedcondition to rats which for some time had been on a diet free fromfat-soluble vitamines, but containing vitamine B. and other essentials. The 444 Dr. J. Hjort. Observations on the Distrihittion of three curves (figs. 1 and 2*) all show a marked increase in the weight of therats when given the seaweed. Fig. 1, the lower curve,
. Observations on the Distribution of Fat-Soluble Vitamines in Marine Animals and Plants . tation at Port Erin by H. H. Thomas andS. H. Wadham, of the Botany School of Cambridge. The slgdQ were broughtto us in fresh condition, and given partly in fresh and partly in driedcondition to rats which for some time had been on a diet free fromfat-soluble vitamines, but containing vitamine B. and other essentials. The 444 Dr. J. Hjort. Observations on the Distrihittion of three curves (figs. 1 and 2*) all show a marked increase in the weight of therats when given the seaweed. Fig. 1, the lower curve, represents the growthon fresh seaweed, kept in cold store. The increase is not so marked as thetwo other curves showing the effect of dried seaweed. This produced anenormous increase in the weight. The dried seaweed was added to the foodas a fine green pow^der and was thoroughly mixed with the food. 1 \0J 0090 80 70 605040 1 > y - >^ / « y / _> Y J* A / r^ V^ ^ X. t ^ ( / p*^ 5 JO 15 20 25 30 35 Fig. 1.—Lower curve, fresh uiva, ad curve, dried ulva, 1 5 10 15 20 25 30 35 40 45 Fig. 2.—Dried ulva, 1 grm. per day. In order to see if the growth-promoting factors of the ulva were soluble inits fats, dried powder of ulva was extracted with acetone and the oil given(1 or 2 drops a day) to the rats. The resulting growth-curves may be seen 100 90 8070 6050 40 30 5 Fig. 3. ? y ^ r^ / r ^ / ^ ^ / ^ /^ > / /^ A l die 3rrho Ih / 5 10 15 20 25 30 35 40 Fig. 4.—Point 1, added 1 gr. steriliseddiatoms per day. Point 2, 1*5 grm,dried diatoms per day. Point 3, 2 dropsbenzene extract of diatoms per day. ?^ In all the figures the abscissa gives the number of days of experiment, the ordinatethe weight in grams. Fat-Soluble Vitamims in Marine Animals and Plants. 445 from fig, 3. They demonstrate a marked increase in growth of the rats fromthe moment when the oil was given. Samples of Diatoms were collecphiltrans06705560
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