The journals have been scanned with a SupraScan 10000RGB scanner; 24-bit true colour, 400 dpi, saved in TIFF-format. Copies of the master images have been converted to black & white, 1-bitmap images and OCRed with ABBYY Fine Reader v.9 software. Adobe Acrobat v.9 was used for the merging and conversion to the final presentation PDF-format.Contains an appendix by Mr. Frank Chambers, which refers to 65 head of cattle inoculated in April and May 1911, before he had received instructions concerning the method of immunisation that was in vogue in the laboratory.