The second group includes those sorts in which 50 to 90 per cent of the catkins were killed. The varieties are Barcelona, Daviana, Fertile de Coutard, Montebello, Cannon Ball, Duke of Edinburgh, Duchess of Edinboro, Prolific Closehead, Red Skinned, Kadetten Zellernuss, Kaiserin Eugenie, Kunzemuller's Zellernuss, Liegel's Zellernuss, Prolifique a coque serree, Romische Nuss, Schlesierin, Truchsess Zellernuss, Voile Zellernuss, Kruse, and Littlepage, a variety of Corylus americana from Indiana. Some wood killing occurred among the varieties in this group. None of these varieties should be depended upon for pollination purposes. The third group includes those varieties experiencing 20 to 50 per cent winter injury. The varieties are Kentish Cob, Italian Red, Bollwiller, Red Aveline, White Aveline, and Vollkugel. These varieties may be planted with caution if too much dependence is not placed upon them as pollinators. In the fourth group are those with less than 20 per cent of catkin injury. These are Clackamas, Cosford, Minna, Early Globe, English Cluster, Medium Long, Oregon, Purple Aveline, Red Lambert, White Lambert, D'Alger, Althaldensleber, Ludolph's Zellernuss, Luisen's Zellernuss, Neue Riesennuss, Eickige Barcelonaer, and Winkler and Rush, the latter two being varieties of Corylus americana. Varieties from this group and the third group should be used as pollinators and as parents in breeding work to develop catkin hardy varieties. Winter killing of the wood has not been as extensive nor as serious as catkin killing. It is usually slight and confined to a few varieties but during the past winter 1932-33, many varieties killed back severely. The varieties are grouped according to the amount of winter injury of wood. Varieties in which more than 50 per cent of the wood was killed are Nottingham, Early Prolific, Garibaldi, Princess Royal, Webb's Prize Cob, Bandnuss, Grosse Kugelnuss, Jeeves Samling, Kaiserin Eugenie, Multiflora, Kurzhullige Zellernuss, Lange von Downton, and the Corylus rostrata previously mentioned. Varieties experiencing from 20 to 50 per cent of wood killing were Barcelona, Red Aveline, Montebello, Berger's Zellernuss, Einzeltragende Kegelformige, Heynick's Zellernuss, Prolifique a Coque serre, Sickler's Zellernuss, Voile Zellernuss, and Russ. In the following varieties from 5 to 20 per cent of the wood was winter-killed: Minna, Bollwiller, Duchess of Edinboro, Pearson's Prolific, The Shah, Barr's Zellernuss, Kunzemuller's Zellernuss, Liegel's Zellernuss, Romische Nuss, Schlesierin, Truchsess Zellernuss, Vollkugel and Littlepage.