IV CON"TENTS. 



Page. 



Annonaceous possibilities for the plant breeds:. Wester 642 



The development of the red hybnd tea rcse 642 



FORESTRY. 



The relation of forests to humidity, Zon. 642 



Pros and cone on the forest and flood question, Roberts 642 



Forest laws of Vermont and instructions regarding forest fires, Hawes 642 



Forestry in Trinidad, Rogers 643 



Present state of forestrjr in Portugal, Borges 643 



Forest administration m Central Provinces and Berar, 1911-12, Hill et al . 643 



Progress report on forest administration in the Punjab for 1911-12, Copeland. .. 643 



Forest distribution in the San Juan Islands, Rigg 643 



The indigenous trees of the Hawaiian Islands, Rock 643 



Important and noteworthy woody plants of German East Africa, I, Holtz 643 



Vitality and distribution of growth in defoliated larch trees. Harper 643 



Some Douglas fir plantations. — I, Taymount plantation, Perthshire, Scott 644 



Rubber experiments in Trinidad and Tobago, Collens 644 



Rubber experiments in British Guiana, Harrigon et al 644 



The rubber-tree book, Maclaren. 644 



Report on the wood-using industoies of Florida, Maxwell 644 



Cooperage, Wagner 644 



DISEASES OF PIANTS. 



The vegetable parasites of cultivated or useful plants, Ferraris 644 



The nature of fungus diseases of plants, Johnston 645 



Further cultiu-es of hetercecious rusts, FVaser 645 



Mycosphaerella pinodes the ascigerous stage of Ascochyta pisi, Vaughan 645 



Effect of the steam-formalin treatment on certain soil organisms, Winston 645 



Plant diseases in Virginia in the years 1911 and 1912, Reed and Crabill 645 



Review of diseases and injuries of cultivated plants, Morstatt 645 



Hebninthosporium diseases of barley in Wisconsin, Johnson 645 



Winter resistance of the uredospores of PiLcdnia coronata, Reed and Holmes. . . 645 



Agar culture of wheat as a means of seedHng purification, Milbrath 645 



The possibilities of disease resistance in cabbage, Jones 646 



Sclerotinia on chicory 646 



The small lettuce Sclerotinia, an und escribed species, Jagger 646 



Disease of peanuts caused by Bacterium solanaceanuni, Fulton and Winston 646 



Leaf roll, cm-ly leaf, and other new potato diseases, Orton 646 



Important potato diseases, Kock 646 



Resting mycelia of Phytophthora and other related species, Melhus 646 



Flowers of sulphur as protection against potato scab, von Feilitzen 646 



Damping-off and root-rot parasites of sugar beets, Edson 646 



On two species of Heterosporiimi, particularly H. echinulatum, Dowson 647 



Notes on the fungus diseases of sugar cane in Porto Rico, Johnston G47 



Fusarium batatatis, the cause of the sweet potato stem rot, Harter and Field. . . 647 



The infection of apple leaves by Gymnosporangium viacropus, Fulton 647 



Effect of Gjnnnosporangium on the transpiration of apple trees. Reed and Cooley . 647 



Effect of cedar rast on assimilation of carbon dioxid. Reed and Cooley 648 



The enzym activities involved in certain fruit diseases. Reed 648 



Studies on Phyllosticta and Coniothyrium occurring on apple foliage, Crabill. . 648 



Twig bUght and blossom blight of the apple, Hewitt 649 



An unknown apple-tree disease, Hewitt and Truax 649 



The greening of wood of pear trees, Vuillemin 649 



Gronartivm. ribicola and the proscription of Ribes nigrum., Stewart and Rankin . 649 



Diseased gooseberry bushes, Steffen 649 



Report of the plant pathologist, Fawcett 650 



Black pit of lemon. Smith 650 



The American Botrytis blight of peonies, Whetzel and Rosenbaum 650 



Attack of cultivated roses by Peronospora sparsa, Bretschneider 650 



The diseases of the sweet pea, Taubenhaua 650 



The Tldelavia disease of violets, Roddick 650 



Some field experiments with the chestnut canker fungus, Rankin 651 



Twig tuberculoais of the Italian cypress, Neger 651 



Fungicides, their preparation and application, Sharpies 651 



