The book History And Biology of Pear Blight was written by author Arthur, Joseph Charles, 1850-1942 Here you can read free online of History And Biology of Pear Blight book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is History And Biology of Pear Blight a good or bad book?
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cholera. This view is said to have been quite frequentty entertained in the early part of the century, but was not sanctioned by the learned. The use of such phrases as " first cousin to the cholera," " a spe- cies of vegetable ferment," etc., surely does not entitle the author to any priority in way of discovery. 1 Rep. N. Y. Agric. Exper. Station for 1884, p. 357. 2 Proc. Am. Assoc. Adv. Sci., vol. xxxiv, 1885, p. 295 ; Bot. Gazette, vol. x, 1885, p. 343 ; Gardeners' Chronicle, vol. xxiv. 188...5, p. 586. (320) OP PEAfi, BLIGHT. 13 We turn from these slight hints to the record of an experiment in inoculation, made in 1845 and published the following year. We are told by S. B. Gookins, 1 of Indiana, that visiting Mr. Ragan (the same person who furnished Mr. Beecher with many of the facts on which he founded the theory to which we haA r e already referred) he was shown a thrift} 7 young pear-tree in the nursery, which had been " inoculated " " by way of experiment " with "the sap of a blighted tree," " a few days previous." " He made an incision about three feet from the ground, lifted the bark as in the process of budding, and injected a small quantity of the diseased sap." " We found the leaves of the patient chang- ing color, and emitting that peculiar odor which is always present in cases of blight, and upon applying the knife, the inner bark was found to be black from the root to the top, while nothing of the kind appeared elsewhere in the nursery." This admirable experiment was combined with a no less admir- able interpretation of the cause of blight.
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