Sweet peas have always been an especial favourite with the breeding expert, ever since Mendel developed his theory of heredity by means of them. Mr. Unwin is a recognized authority on their mysteries, as readers of his books will know.
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Sweet peas have always been an especial favourite with the breeding expert, ever since Mendel developed his theory of heredity by means of them. Mr. Unwin is a recognized authority on their mysteries, as readers of his books will know.
