The Journal of experimental zoology . , 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.
The Journal of experimental zoology . , 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., = nose-anus length. These specimens wereselected as typical of the different groups. For the full number see table 1. 54 GROWTH OF AMPHIBIA AFTER THYROIDECTOMY E. R. HOSKINS AND M. M. HOSKINS. 55 PLATE 3 EXPLANATION OF FIGURES R. sylvatica. Brains after fixatioo. Representative specimens. Note par-ticularly the shape of the optic lobes and fore-brain. 22 Control larva. 5/3 to 5/23/18. Alive: Tot., 36 mm., B., mm.;fixed: Tot., 34 mm., B., 13 mm. 23 Control frog. 4/14 to 6/5/18. Alive: B., 15 mm.; fixed: B., 14 mm. 24 Control larva. 4/14 to 5/28/18. Alive: Tot., 48 mm., B., 20 mm.;fixed: Tot., 45 mm., B., 19 mm. 25 Thyroidless larva. 4/14 to 5/20/18. Alive: Tot., 50 mm., B., 20 mm.;fixed: Tot., 47 mm., B., 19 mm. 26 Thyroidless larva. 4/15 to 10/13/17. Alive: Tot., 68 mm., B., 25 mm.;fixed: Tot., 60 mm., B., 23 mm. 27 Thyroidless larva. 4/28/17 to 5/7/18. Alive: Tot., 60 mm., B., 22 mm.;fixed: Tot., 52 mm., B., 21 mm. Abbreviations and dates as in plate 2. 56 GROWTH OF AMPHIBIA AFTER THYROIDECTOMY E. R. hoskinsand m. m. hoskins
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1919
