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JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



of deserts in their spiny, drought-resisting character more than any 

 other type of garden plants. Those kinds that take the form of various 

 sub- tropical plants — such as yuccas, agaves, and bromeliads generally 

 ■ — though now tolerably well known, have not been planted to any extent ; 

 the preference is generally, and I think rightly, given to the more hardy 

 kinds that develop the colouring of amethyst and silver ; for not only are 

 they more effective as border plants, but much easier to grow and, with 

 one exception, more lasting. They prefer a light soil, and if the position 

 is the warmest the garden affords one can rely upon excellent colouring 

 of stem and involucrum. All save one hybrid are easily raised from seeds 

 if procurable, and most will grow from root-cuttings freely if divided 

 when the plants start to grow. — E. T. C. 



Hollyhock Rust. By T. W. Kirk, F.L.S. (Dep. Agr. N.Z.,Bull No. 12 ; 

 December 1905). — This rust has been noted in New Zealand on seven 

 species of malvaceous plants, and the present bulletin is chiefly directed 

 to suggestions of preventive means. It recommends that all young 

 hollyhock plants should be carefully sprayed with Bordeaux mixture, 

 which will generally be found quite effective. If the disease appears 

 when the plants are on the point of flowering, the use of soda Bordeaux 

 mixture is recommended, owing to the fact that this spray does not in 

 any way stain the leaves and render them unsightly. All fading, diseased 

 leaves should be carefully collected and burnt. It is not considered 

 advisable to save seed from diseased plants. — M. C. C. 



Horticultural Society, Transactions of the Iowa. Vol. xL 



Plates. — To quote the letter of transmittal to his Excellency the Governor 

 of Iowa, which is printed as a preface to this volume, "it contains the 

 fortieth annual report of the State Horticultural Society . . . also supple- 

 mentary papers and discussions on horticulture, including the proceedings 

 of the four auxiliary societies, the whole showing the condition of horti- 

 culture in the State for the year 1905." The following were among the 

 subjects touched upon in the papers read before the societies and in the 

 subsequent discussions : — Strawberry Growing and Marketing ; Apple 

 Choosing, Bearing, Planting, Cultivating, Harvesting, Marketing, and 

 Storing, all considered with reference to the conditions in Iowa ; Propaga- 

 tion of Shrubs ; American Wild Flowers as Garden Plants ; the History 

 of the Chrysanthemum ; Nature Study as a Part of Education ; School 

 Gardens ; Vineyards ; Orchard Spraying ; the Work of the State Experi- 

 mental Stations ; Co-operation in Marketing Fruit ; Top : grafting ; the 

 Sweet Potato ; Pollination of Flowers ; Forest Survey of Iowa ; Phenology 

 of Plants, with Tables giving Average Monthly Temperatures in Ames, 

 Iowa, during 1905, and the blooming periods of various plants and trees ; 

 Potato Diseases and their Remedies ; some Bacterial Diseases, including 

 Cabbage Rot, Soft Rot of Calla Lily, Wilt Disease of Tobacco, Crown 

 Gall and Hairy Root Diseases, Rust and Blight in all their Forms, 

 some Powdery Mildew Diseases ; the Planting and Care of Woods ; 

 Women's Work in Horticulture ; Seedling Fruit Trees raised in South- 

 Eastern Iowa ; New Fruits ; Peach Growing ; Orchard Troubles and 

 Treatment ; the Control of Insects ; the Preparation of Spray Mixtures ; 



