The Journal of experimental zoology . sylvaticaR. sylvatica. 7X20. 8 R. X 20. 9 R. sylvatica. PLATE 1 EXPLANATION OF FIGURES Control. Tot., 24 mm. Transverse section. 5/15 to Thyroidless. Tot., 30 mm. Transverse section. 5/15 to Control. Tot., 24 mm. Hypophysis. X Tot., 30 mm. Hypophysis. X Tot., 24 mm. Thyroid. X Tot., mm. 4/20/16. X Tot., mm. One hour after thyroidectomy. Thyroidless. Tot., mm. Four days after thyroidec- Control. Tot., 10 mm. X 20. In stating the length of
The Journal of experimental zoology . sylvaticaR. sylvatica. 7X20. 8 R. X 20. 9 R. sylvatica. PLATE 1 EXPLANATION OF FIGURES Control. Tot., 24 mm. Transverse section. 5/15 to Thyroidless. Tot., 30 mm. Transverse section. 5/15 to Control. Tot., 24 mm. Hypophysis. X Tot., 30 mm. Hypophysis. X Tot., 24 mm. Thyroid. X Tot., mm. 4/20/16. X Tot., mm. One hour after thyroidectomy. Thyroidless. Tot., mm. Four days after thyroidec- Control. Tot., 10 mm. X 20. In stating the length of the animals. Tot. = total length. The dates given referto the date of the beginning of the experiment and the date of killing the , 5/15 to 8/15/16 = May 15th to August 15th, 1916. Abbreviations: ^., aorta;B. v., blood-vessel; H., hypophysis; Mes., mesoderm; , pericardial cavity;Ph., pharynx., T., thyroid; X., location of thyroid in normal larvae. 52 GROWTH OF AMPHIBIA AFTER THYROIDECTOMY E. B. HOSKINS AND M. M. H0SKIN3. 53 PLATE 2 EXPLANATION OF FIGURES R. sylvatica. All natural size. Drawn in 70 per cent alcohol. 10 and 11 Thyroidless. 4/28/17 to 7/10/18. Alive: Tot., 72mm., B., 25 mm.;fixed: Tot., 69 mm., B., 25 mm. 12 and 13 Control. 4/14 to 5/29/18. Alive: Tot., 47 mm., B., mm.;fixed: Tot., 43 mm., B., 18 mm. 14 and 15 Thyroidless. 4/14 to 5/28/18. Alive: Tot., 50 mm., B., 19 mm.;fixed: Tot., 46 mm., B., 18 mm. 16 and 17 Control. 4/14 to 6/1/18. Alive: B., 15 mm.; fixed. B., 14 mm.; 18 and 19 Thyroidless. 4/14 to 7/13/18. Alive: Tot., 65 mm., B., 25 mm.;fixed: Tot., 60 mm., B., 23 mm. 20 Precocious frog with regenerated thyroid. 4/11 to 7/10/17. Alive: B., mm.; fixed: B., 8 mm. 21 Control. 4/11 to7/10/17. Alive: Tot., 40 mm., B., ; fixed: Tot.,37 mm., B., 14 mm. The dates given refer to the beginning of the experiment and the date ofkilling the animal, thus indicating the age of each specimen. In stating thelength. Tot. = total length; B., = no
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1919
