Oct.. 1914-Mar., 191s Illustrations xiii 



Two Clover Apraos 



Page. 

 Fig. I. Aphis brevis: Antenna of fall alate female collected from hawthorn ... . 432 



2. Aphis brevis: Antenna of alate male 433 



3. Aphis bakeri: Antenna of alate female collected from clover 433 



Net Energy Values of Feeding Stuffs for Cattle 



Fig. I. Graphshowing the dry matter eaten and the increments of heat produc- 

 tion due to standing, computed per 500 kg. live weight per 24 hours. 455 

 2. Graph showing the relation of heat production to dry matter consumed, 



computed per 500 kg. live weight 472 



Air and Wind Dissemination of Ascospores op the Chestnut- 

 Blight Fungus 



Fig. I . Map of chestnut coppice growtli at West Chester, Pa. , in and near which 

 tlie experiments on wind dissemination of the chestnut-blight fungus 

 were carried out 497 



2. Map showing the location of some of the important outlying exposure- 



plate stations 498 



3. Map showing the location of water spore-trap stations Nos. I to VI 520 



