In the book, Edward’s gave a fuller account of his research, widening it to include the forms of plants, embryos and organs such as the heart. His work suggests that there are universal laws, not yet fully understood, which guide an organism’s growth into predetermined patterns. His work has profound implications for those working in genetics and stem-cell research. Edwards died in 2004 at the age of 91 and Graham Calderwood has edited and revised this classic work.