INDEX 



683 



Phyllomania in Begonia, not a winter 



state, 575 

 proliferations not mirror images, 



612 



nutrition and, 581 

 root-injury causes, 593 

 stage of greatest susceptibility, 579 

 theory concerning, 600-607, 609 

 top pruning causes, 609 

 Physics, a subsidiary study in patho- 

 logy, 633 

 Phytophthora infestans(Mont.)de Bary, 



bacteria follow, 34 

 Pierce (N. B.), control of walnut blight, 



74 



Piricularia on rice, 66 

 Planar lenses, 92, 126 

 Plant cancer, 413. (See crown gall.) 

 suggested relation of, to animal 



cancer, 569, 571 

 Plant parasites, general morphology 



and cultural characters, 35 

 Plant, physiology, importance of, to 



pathologists, 634 

 Plasmodiophora brassicae Woronin, 549, 



551 



Plates, lumiere, 126 

 Plum, black spot of, 473. (See Bac- 

 terium pruni.) 



Poppy, bacterial disease of, 54 

 Portugal, bacterial diseases in, 66 

 Potato, 



Appel's rot of, 253 



basal stem rot of, 253. (See also 



Bacillus phytophthorus.) 

 black leg of, 253. (See black rot and 



Bacillus phytophthorus.) 

 black rot of, 253 

 brown rot of, 177 

 intumescent shoots, 



excessive acidity of, 528, 536, 543 

 excessive sugar content of, 541, 



563 



figures illustrating, 532, 533, 534, 

 535, 536, 537, 538, 539, 540, 

 542, 544, 546-548 

 lenticel proliferation in, 502 

 net-necrosis of, 219 

 rots, 



found in Australia, 52 



Potato, rots found in England, 64 

 found in France and Italy, 66 

 found in Germany, 64 

 found in United States and Can:id:i. 



54 



general discussion of, 263-266 

 great looses due to, 54, 64, 66 

 Spieckermann's ring rot of, 207, 474 

 Printing papers, 122 

 Proliferation, in Begonia, 574-630 



abundant over mid-ribs, 596, 604, 



605, 606, 612 

 arising from epidermal hairs, 583, 



616, 617 

 arising from epidermis, 583, 618, 



621 



arising from internodes, 577 

 a teratosis, 579 



caused by a definite shock, 575 

 caused by loss of water, 593 

 caused by wounding, 590, 593, 613, 



614 



changes in plant leading to, 600 

 comparison with similar phenom- 

 ena in other plants, 581, 619 

 corking over of stimulated tissues, 



586, 589, 594, 607, 609, 616 

 development of adventive shoots 

 away from the mother plant, 

 580, 581 



distortion resulting from, 612 

 experimentally produced on inter- 

 nodes, 582, 586, 589, 592, 598, 

 608, 601 



extent of development of, 581 

 from totipotent cells, 583 

 general on leaf-blade, 578 

 increase of acidity as a cause of, 



601 



literature on, 629 

 nature of shock necessary to pro- 

 duce, 599 



produced at will, 579 

 season of year it may be produced, 



575 

 shocked leaves not stunted, 584, 



594, 612 



shocked leaves stunted, 602, 611 

 table of number of shoots on stimu- 

 lated internodes, 627 



