This link to the Adobe site is provided for you to obtain or upgrade the Acrobat Reader software.This document has been scanned, and the images have been compiled into Adobe ACROBAT Portable Document Files. These PDF files require the user to install Acrobat Reader in order to view the files. The Acrobat Reader software is free and widely available. These files are created from single page images: a version converted to text has not been prepared at present. However, it should be possible for a resourceful user to cut and paste the graphics for each page, and to use them in an OCR program (including the full commercial version of Acrobat).
The scanned images have been converted to black-and-white format (1 bit per pixel) to reduce the file size to a practicable value for the Internet. There is a consequent loss of delicacy and subtlety from the original plates. The aim has been to provide a printable result with detail comparable to a good photocopy. The printed plates were reproduced poorly: the original plates have been scanned, and some lack the indication of plate number on the image.
This link to the Adobe site is provided for you to obtain or upgrade the Acrobat Reader software.