IV CONTENTS. 



SEEDS WEEDS. 



Page. 



The influenc-e of heat on the germination of seeds, H. H. Dixon 767 



The germination of seeds after exposure to high temperatures, H. H. Dixon. . 767 



(Termination of leguminous seed and its intiuence by micro-organisms, L. Hi Itner 768 



The action of alcohol on germination of seeds, L. Sukatscheff 768 



Resistance of seed to ]ioisons, H. H. Dixon 768 



California-grown sugar-beet seed 768 



The Canada thistle and dandelion, L. H. Pammel 768 



Charlock or yellow weed 768 



Destruction of charlock in grain crops, (1. F. Strawson 769 



Notes on the destruction of some injurious plants, G. lleuzc 769 



DISEASES OF PLANTS. 



Miscellaneous notes on fungus diseases of plants, L. H. Pammel 769 



Report of the vegetable pathologist and entomologist, H. Try on 769 



The origin and propagation of cereal rusts through the seed, J. Eriksson 770 



The occurrence and distribution of cereal rusts through the seed, J. Eriksson. . 770 



On the specialization of cereal rusts, J. Eriksson 770 



The specialization of black rust of cereals, J. Eriksson 771 



Cereal rusts, D. McAljtine 771 



Wheat and barley rusts, D. McAljiine 771 



Culture experiments with rust fungi, H. Klebahn 771 



A classification of the rusts of the Umbellifera?, C. B. Plow right 771 



Rust of Andropogon sorglnim, W. Busse 771 



Rust of timothy, J. Eriksson 771 



The relation between host and parasite, H. Marshall Ward 772 



Concerning pure cultures of the rust Puccinia disper.'ia, H. Marshall Ward 772 



Contribution to the study of cereal smuts and their prevention, C. von Tubeuf . 772 



Experiments in the prevention of stinking smut of wheat, D. McAlpine 772 



Some biological phenomena of TMilago vimidis, J. Griiss 772 



A new parasite of TrifoUum riwntanam, F. Bubak 773 



The stem anthracnose of red clover, O. Kirchner 773 



Urophlyctis, a fungus causing galls on the roots of alfalfa, P. INIagnus 773 



On the parasitism of IWudo)no)ias destrudans, M. C. Potter 773 



The root rot of taro, J. G. Smith 773 



A disease of nursery stock, G. Massee 774 



Two unusual troubles of apple foliage, F. C. Stewart and II. J. P^ustace 774 



Spraying experiments in 1902 for black spot, D. ^Ic Alpine 775 



Experiments in the treatment of ajiple and pear seal), 1901-2, D. McAlpine. . . 775 

 Experiments in the treatment of black spot of the apple and pear, D. Mc- 

 Alpine 775 



The fungus causing black spot of the apple and pear, D. McAlpine 775 



Die-back of the apple, D. McAlpine 776 



Brown rot or ripe rot of fruit, D. McAlpine 776 



Peach and plum rust, D. McAlpine 776 



Clastero.ywrliim carjjopliilinn, and the gummosis of stone fruits, R. Aderhold 776 



Variations in the appendages of Podosj>hiv7'a o.ri/cantlui', J. G. Sanders 776 



A disease of pineapples 776 



Occurrence and characteristics of black rot in Dagestan, N. N. von Speschnew. 776 



An experiment on the treatment of gray rot of grapes, F. Boisseau 776 



Powdery mildew and early pruning, L. Ravaz 777 



Powdery mildew and early pruning, L. Degrully 777 



Recent investigations in combating the enemies of the grape, F. Gvozdenovic. . 777 



Diseases of cultivated chrysanthemums, P. Voglino 777 



Chlorosis in j^alms 777 



Witches' brooms on the barberry, J. Eriksson 777 



Larch and spruce fir canker, G. Massee 778 



Some new fungus parasites of oaks, E. Henry 778 



A twig blight of willows, C. von Tubeuf 778 



Two new leaf parasites of deciduous trees, P. Hennings 778 



Experiments in combating dry rot of timber, E. Henry 778 



A contribution to the knowledge of timber dry rot, C' von Tubeuf 778 



Spraying for fungus diseases, D. McAlpine 778 



