The effects of inanition and The effects of inanition and malnutrition upon growth and structure effectsofinaniti00jack Year: 1925 Fig. 2i. Fig. 22. Fig. 21.—Abnormal pluteus of sea-urchin Sphaerechinus reared in a mixture containing CaHP04, but not CaC03. Third day, showing the maximum stage of development reached. The form is abnormal; the 'snout-like' process and absence of skeleton being especially characteristic in the absence of calcium carbonate. Fig. 22.—Abnormal pluteus of the sea-urchin Echinus, reared in mixture containing NaCl, KC1, MgS04, CaS04, Ca3P20s and FeC03. Deficiency in C
The effects of inanition and The effects of inanition and malnutrition upon growth and structure effectsofinaniti00jack Year: 1925 Fig. 2i. Fig. 22. Fig. 21.—Abnormal pluteus of sea-urchin Sphaerechinus reared in a mixture containing CaHP04, but not CaC03. Third day, showing the maximum stage of development reached. The form is abnormal; the 'snout-like' process and absence of skeleton being especially characteristic in the absence of calcium carbonate. Fig. 22.—Abnormal pluteus of the sea-urchin Echinus, reared in mixture containing NaCl, KC1, MgS04, CaS04, Ca3P20s and FeC03. Deficiency in CaC03 results in complete absence of skeletal development, and in abnormal external form differing from that shown for Sphaere- chinus in the preceding figure. Third day, representing the most advanced stage of develop- ment reached.
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