The Journal of experimental zoology . mm., B., 21 mm. 85 Thyroidless larva. 4/28/17 to 7/10/18. Alive: Tot., 68 mm., B., 22 mm.;fixed: Tot., 56 mm., B., 22 mm. 86 Control frog. 4/7 to 8/12/17. Alive: Tot., mm., B., 14 mm.; fixed:Tot., 14 mm., B., mm. 87 Thyroidless larva. 4/14 to 7/13/18. Alive: Tot., 65 mm., B., 24 mm.;fixed: Tot., 60 mm , B., 23 mm. Testes. X 8 88 Thyroidless larva. 5/2 to 6/8/18. Alive: Tot., 45 mm., B., 18 mm.;fixed: Tot., 42 mm., B., mm. 89 Control larva. 4/18 to 5/28/18. Alive: Tot., 45 mm., B., mm.; fixed:Tot., mm., B., 18 mm. 90 Control frog. 4
The Journal of experimental zoology . mm., B., 21 mm. 85 Thyroidless larva. 4/28/17 to 7/10/18. Alive: Tot., 68 mm., B., 22 mm.;fixed: Tot., 56 mm., B., 22 mm. 86 Control frog. 4/7 to 8/12/17. Alive: Tot., mm., B., 14 mm.; fixed:Tot., 14 mm., B., mm. 87 Thyroidless larva. 4/14 to 7/13/18. Alive: Tot., 65 mm., B., 24 mm.;fixed: Tot., 60 mm , B., 23 mm. Testes. X 8 88 Thyroidless larva. 5/2 to 6/8/18. Alive: Tot., 45 mm., B., 18 mm.;fixed: Tot., 42 mm., B., mm. 89 Control larva. 4/18 to 5/28/18. Alive: Tot., 45 mm., B., mm.; fixed:Tot., mm., B., 18 mm. 90 Control frog. 4/14 to 6/5/18. Alive, 15 mm., fixed, 14 mm. 91 Thyroidless larva. 4/14 to 7/15/18. Alive: Tot., 54 mm., B., 20 mm.;fixed: Tot., mm., B., mm. 92 Thyroidless larva. 5/3 to 10/17/17. Alive: Tot., 68 mm., B., 23 mm.;fixed: Tot., 63 mm., B., 21 mm. 93 Thyroidless larva. 4/28/17 to 7/6/18. Alive: Tot., 72 mm., B., 25 mm.;fixed: Tot., mm., B., mm. 64 GROWTH OF AMPHIBIA AFTER THYROIDECTOMY E. R. HOSKIXS AND M. M. H03KINS. 65 PLATE 8 EXPLANATION OF FIGURES R. sylvatica. Ovaries, X 36 94 Half-grown normal larva (fig 21). Oocytes, 50 n. 95 Precocious frog (fig. 20). Oocytes, 75/x. 96 Young normal frog (1917). Oocytes, 120 yu. 97 Young thyroidless larva (1918). Large as control larva at metamor-phosis. Oocytes, 50 n (smaller oocytes than those of 1917 larvae of same size). 98 Thyroidless larva (1918) (5 weeks old). Much younger than that offigure 97, but of much larger size, oocytes (60 n) are relatively of the same size. 99 Thyroidless larva one-half the size of larva of figure 98, but more thantwice as old (eleven weeks) Oocytes (130 /i) are relatively about four times aslarge in diameter as those in figure 98. 100 Thyroidless larva (1918). Very little older than larva of figure 99 (twelveweeks), but nearly four times as large. Oocytes (180 /x) are relatively smallerthan those of figure 99. 101 Thyroidless larva (6 months old), killed in October, 1917. Oocytes,200 M.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1919
