Whip Graft Waxed
After the cion has been accurately placed, as shown previously, the exposed surfaces, including the entire body of the cion, are painted thickly with grafting wax, applied warm with a brush. If the wax is rather hot, it should be applied first about the bark of the stock, and then carried over the cut surface as it cools. The method of applying the wax with a brush, instead of with the fingers as was formerly done, is a great time saver.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 5