Keywords: PSM V47 D478 Blurred photo image.jpg Blurred photo image http //www archive org/details/popularsciencemo47newy Popular Science Monthly Volume 47 1895 author PD-old Extracted image from book to grayscale cropped whitespace ineuw http //www archive org/details/popularsciencemo47newy Popular Science Monthly Volume 47 Popular Science Monthly illustrations/Volume 47 Blurring |