Bergamot Russelet Catharine Early sugar Vergalieu Baurre vert July Winter baurre Monsier Jean Baurre de roy Trom valette Green chissel French primative Swan's egg Winter bon cretan Colmar Easter bergamot Cressan Amber Spanish bon cretan Chaumontelle Large bell Citron de camis La Chassaire Summer bergamot Hampden's bergamot Autumn bergamot Doctor Uvedale's St. Germain Amozelle Large winter, weighs near two pounds Lent St. Germain Pear wardens Brocaus bergamot Empress Winter bergamot Large summer baking Jargonelle The black pear of Worcester or Parkinson's warden Roussilon The skinless Cuissemadam Green catharine Coincident with the establishment of nurseries selling named varieties of pears another event of prime importance to pear-growers occurred. Pear-blight became epidemic in the orchards along the Hudson, and while it must have been noticed before, its ravages at this time brought it prominently to the attention of pear-growers. The disease seems to have been first mentioned by William Denning who described it in the _Transactions of the Society for the Promotion of Agriculture_ for 1794 (pt. 2, p. 219) in an article on the decay of apple-trees. Denning says that he first saw the malady in orchards on the highlands of the Hudson in 1780 attacking apples, pears, and quinces. He gives a good description of the disease, but says it is caused by a borer in the trunk which he found after much labor. From Denning's discovery until Burrill a hundred years later, in 1882, discovered a cause of the disease and suggested a preventive, every treatise on the pear speculates on the cause and cure of pear-blight, a disease which has been and is the terror and despair of growers of this fruit.