I have a larger chart from construction paper ruled in twelfths -- 1 inch to the foot 1/12th to the inch -- on which I chart all bones also, and a large record book for numbers of specimens, and of blocks, with location and description.

Below is an illustration of how chart and records are made. [Sketch]

  Record

197 Stegosaurus

 No. 197/12 Femur (Cb:70)

 "  19/36 Vertebra (Ba:68)



130 sauropod Dinosaur

 No. 130/6 Dorsal Vertebra (Ca:62)



The principal change we have made from previous work is giving with each record the nearest cross-lines so one can locate it on the chart at once.