Download or read book The Biological Problem of To-day: Preformation Or Epigenesis? written by Oscar Hertwig and published by DigiCat. This book was released on 2022-08-01 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: DigiCat Publishing presents to you this special edition of "The Biological Problem of To-day: Preformation Or Epigenesis?" (The Basis of a Theory of Organic Development) by Oscar Hertwig. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.