. Journal of morphology. Fig. 16 Hybrid between Fundulus heteroclitus 9 and Menidia d, thirty days old. HEREDITY IN HETEROGENEOUS HYBRIDS 13 Beating . Heart. Fig. 17 Embryo of Fundulus heteroclitus thirty-one days old, raised in 50cc. sea water + 2 cc. per cent NaCN. 14 JACQUES LOEB HeartBeating

---

Size: 1601px × 1560px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1, booksubjectphysiology, bookyear1912