Yet another page of Mr. Burbank's record books, this one dealing with grafting. It will be seen that the records of different years are associated, and it will be obvious that the records were intended for Mr. Burbank's own eye, to supplement the records of memory. When thousands of experiments are being performed simultaneously, it is imperative that the recording should be done with the least possible loss of time.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 8