In his experiments with the culture of the Micrococcus amylovorus, which Prof. Arthur believes to cause the fire-blight in the pear, he found it required a large supply of water for its best development - a fact, observes the Professor, which has a practical bearing.

In examining twigs of the Bartlett pear on April 30th, when they had flower buds on them, he found 68.7 per cent. of water. Twigs of the Seckel pear had 67.3. The half-grown fruit, taken the first week in July 79.3 for the Bartlett and 77 for the Seckel. Professor Arthur, noting that the Bartlett is believed to be more susceptible to the fire-blight than the Seckel, believes " these numbers give some support to the view that succulency and the strength of the disease are directly related." We cannot conceive, however, how less than two parts in a hundred can have any material effect on what we term succulency, nor is it clear why, if the germs of Micrococcus will sprout in a single drop of water, a whole tumbler of water should have any greater influence in aiding the process.