On this basis the Clark hickory was awarded but 7 points for the same proportion of kernel in 1919 instead of 10 as in 1918. This accounts for 3 out of the 5 points difference between the 79 points awarded in 1918 and the 74% in 1919. The other two points can be similarly explained. There are bound to be similar changes in the tables for awarding points from year to year, but they will be less and less as time goes on. For example, the Wasson butternut of the 1915 contest which weighed 18.8g was the largest butternut received until 1919 when two larger came in, one weighing 19.5g and the other weighing 22.6g. The Mott shellbark hickory which weighs 29.6g which was discovered by Dr. Morris before the founding of the Association is still the largest hickory of which we know. On the other hand the black walnut record for size was exceeded in 1918 and also in 1919. The nuts received were gone over carefully and all characteristics measured where this was possible, then the other characteristics were passed on by me. Then the best nuts were brought to the attention of Dr. Morris and Dr. Deming and the three of us passed on those characteristics where methods of measurement had not been worked out. The results of this contest are noted in considerable detail as it is believed that they may have value as matters of record. While an attempt has been made to give the species of each nut tested as such information is useful, it must be understood that the notations of species are tentative and subject to change should further knowledge require it. It is, frequently, difficult to positively identify a nut as to species without having leaves, buds, bark and husk for examination and in most instances the judges did not have these. No nut is noted as a hybrid unless it has been proven so by evidence which it is believed is beyond question, yet there are a number of nuts noted as pure species which later may be proved to be hybrids. This is particularly so in the case of the hickories. In explanation of the tables it should be noted that weights of nuts and kernels are expressed in grams, while cracking pressures are expressed in kilograms. The methods used for measuring the various characteristics are noted in detail in the article "Judging Nuts" on pages 122 to 132 inclusive.