On the Photochemistry of the Retina and on Visual Purple

Publisher: London, Macmillan and co. Publication date: 1878 Subjects: Retina Photochemistry Notes: This is an OCR reprint. There may be typos or missing text. There are no illustrations or indexes. When you buy the General Books edition of this book you get free trial access to Million-Books.com where you can select from more than a million books for free. You can also preview the book there.