The previous page is sending you to https://www.alamy.com/the-american-arbacia-and-other-sea-urchins-sea-urchins-arbacia-punctulata-sea-urchins-embryos-biology-research-jelly-fertilization-membrane-perivitelline-space-hyaline-layer-cortical-layer-endoplasm-pigment-granules-fig-10-diagram-of-membranes-and-layers-of-fertilized-egg-of-arbacia-punctulata-e-b-harvey-and-k-dan-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-harvey-ethel-browne-b-1885-princeton-image237764736.html.

 If you do not want to visit that page, you can return to the previous page.