TWENTY-FIB ST ANNUAL MEETING. 71 



On Vitis riparia Mx. 

 1528, on leaves and stems, June 10, 1886, Manhattan; 1569, on leaves, July 7, 1887, 

 Mound City, Linn county; 1800, on leaves, September 1, 1889, Manhattan; 678, on 

 leaves, October 4, 1884, Manhattan (Phoma ustulatum B. & C. also occurs on the same 

 leaves); M. A. Carleton No. 38, on leaves, October 9, 1887, Cloud county. 



Note. — During the last week of August, 1889, the experimental vineyard of the 

 Kansas State Agricultural College, at Manhattan, was examined for Plasmopara 

 viticola. Thinking that the result might be of value as showing which varieties were 

 most affected,* I have given the horticultural name of the variety, the species from 

 which it is derived, according to the "Bushberg Catalogue" for 1888, and also the 

 estimated damage on a scale of 100, in figures immediately following the name of the 

 variety. 



Varieties derived from Vitis cestivalis Mx. On leaves. 



1808. Eumelan (15). August 31. 



1807. Lenoir (10). August 31. 



Varieties derived from Vitis Labrusca L. On leaves. 



1838. Catawba (20). August 29. 



1837. Concord (20). August 29. 



1831. Cottage (15). August 31. 



1835. Creveling (30). August 29. 



1836. Diana (30). August 29. 

 1834. Dracut Amber (8). August 29. 



1832. Eaton's Seedling (20). August 31. 



1833. Early Victor (8). August 29. 



1813. Hartford Prolific (2), oospores mature, scarce. August 31. 



1816. Zona (10), oospores immature. August 31. 



1817. Isabella (10), oospores mature, very scarce. August 31. 



1814. Ives (1), oospores scarce. August 31. 



1810. Lady (20), oospores very scarce. August 31. 



1818. Martha (6). August 31. 



1812. Mason's Seedling (30). August 31. 



1811. Maxatawney (10). August 31. 

 1865. Miles (10). August 31. 



1828. Norfolk (8). August 31. 



1820. Perkins (10), oospores immature. August 31. 

 1827. Pocklington (10). August 31. 



1830. Prentiss (15), oospores mature. August 31. 



1826. Rebecca (20). August 81. 



1821. Venango (5), oospores nearly mature. August 31. 

 1825. Vergennes (15). August 31. 



1822. Warden's Seedling (15). August 31. 

 1824. Wyoming Red (15). August 31. 



Hybeid Varieties. — On leaves. 

 1844. Agawam (5). August 29. 

 1849. Amber Queen (10). August 81. 

 1854. Amminia (10). August 29. 

 1861. August Giant (5). August 29. 

 1843. Beauty (15). August 29. 



*The following varieties were not attacked by Plasmopara : 

 Bacchus. Clinton. Duchess. Empire Stale. Goethe. Norton's Va. Siring. 



Barry. Oynthiana. Elvira. Gazelle. Herbert. Peter Wylie. Ulster's Prolific. 



