As a graduate student I was privileged to view a copy of Hartsoecker's atlas, published in 1694, courtesy of my major professor, Dr. Howard L. Hamilton. This atlas is preserved in the library archives of ancient and rare books at Iowa State University, Ames, Iowa.
5.
De BeerSir GavinEmbryos and Ancestors, 3rd ed. (London: Oxford University Press, 1962), 5.
6.
BlechschmidtErichThe Beginning of Human Life, (New York: Springer-Verlag, 1977), 61–64.
7.
BeerDeEmbryos and Ancestors, 40, 52.
8.
GrobsteinClifford“External Human Fertilization,”Scientific American240: 57–67. Grobstein also wrote a gratuitous book, Science and the Unborn: Choosing Human Futures (New York: Basic Books, Inc., 1988). In this book he reinforces his “preembryo” and his new definition of “status” for the unborn, meaning, of course, a moral status.