420 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
scattering poisoned bait amongst the corn. The bait consists of white arsenic or 
Paris green and bran (i : i6) made into a paste with molasses or water, to 
which minced oranges or lemons are added. — S. E. W. 
Maize Pests. By F. H. Dudley [Dep. Agr. Augusta, Maine, Bull. vol. xviii. 
No. I, pp. 27-30). — The four most injurious pests to Indian Corn are the 
European Corn Borer {Pyrausta nuhilalis), the Bollworm {Heliothis obsoleta), 
the Common Cornstalk Borer { Papaipema nitela), and the Salt Marsh Caterpillar 
(Estignieme acrola). The European Corn Borer hatches two broods annually. 
They eat their way into the cornstalks, where they winter. If all the corn fodder 
is fed out or put in a Silo and all weeds destroyed, this pest may be exterminated. 
As the Bollworm winters in the soil, deep ploughing in the late autumn will destroy 
them if the winter is severe. The Common Cornstalk Borer is hatched in spring 
from autumn-laid eggs in grass-lands. All grass adjoining the maize fields should 
be mowed and given to cattle or burned. The Salt Marsh Caterpillar, or Woolly 
Bear, can only be dealt with by hand-picking. — 5. E. W. 
Malus rivularis Roemer. By W. J. Bean (Bo/. Mag. t. 8798, June 1919). — 
The only species of crab native west of the Rockies, this is nearly related to 
M. Toringo. It produces ellipsoid fruits from which the calyx falls away, and 
is worth cultivating as an ornamental tree for them. ~ It was introduced by 
David Douglas, but has never become common although quite hardy and vigorous. 
In a wild state it grows in moist, deep, rich soil, forming a tree up to 40 feet. 
F. J. C. 
Mangos Cultivated in Florida, The Natural Groups of. By Wilson Popenoe 
{Am. Pom. Soc, 1917, pp. 70-81 ; 5 plates). — The principal diagnostic characters 
of six groups are described and the varieties belonging to each enumerated, 
their country of origin being shown. — A. P. 
Mesembryanthemum nobile Haw. By R. A. Rolfe {Bot. Mag. t. 8814 ; 
Sept. 1 91 9). — Native in Cape Colony. A greenhouse species with large golden- 
yellow flowers and few long fleshy glaucous leaves covered with green spots. 
F. J. C. 
Metrosideros collina A. Gray. By R. A. Rolfe {Bot. Mag. t. 8846 ; June 
1920). — A Polynesian species hardy in Scilly, forming a tree up to 60 feet high, 
with leathery elliptic or roundish leaves about to 2| inches long, and red 
flowers. — F. J. C. 
Muscadine Grape Paste. By C. Dearing {U.S. Dep. Agr., Farmers' Bull. 
1033. PP- 2-13). — The pulp obtained as a by-product in making jelly is freed 
from seeds by passing through a colander. It is mixed with half its weight 
of sugar and boiled in a shallow pan with constant stirring until the mass is so 
stiff that it will not readily flow together when separated. It is then poured 
out on a marble or china surface to form a slab half an inch in thickness. After 
twelve hours it is cut in portions one inch square. The squares are rolled in 
powdered sugar and left to dry. It may be coated with sugar icing or covered 
with chocolate. The plain paste may be spread on bread. Similar fruit pastes 
can be made from apples, pears, guava, strawberries, raspberries, and black- 
berries.— S. E. W. 
Mushrooms, A Brown Blotch Disease of Cultivated. By Sidney G. Paine 
{Ann. Appl. Biol. vol. v. Nos. 3 and 4, April 1919, pp. 206-219 ; figs.). — Symptoms 
of the disease are described. The causal organism is a small bacterial parasite 
which may possibly be identical with the organism which produces pear-blossom 
blight.— i?. C. S. R. 
Novelties. By M. Gamier {Rev. Hort. vol. xcii. pp. 34, 35, 55, 56 ; 4 figs). — 
Amaranthus ' Crlte de Coq chamois6e,' flowers, brilliant salmon pink to reddish 
pink. Impatiens Balsamina ' Fleuri rouge,' brilliant scarlet flowers, opening 
in July, double. Canna florijera, a fine large red-flowered variety raised from 
seed of C. ' Oiseau de feu.' Single yellow Wallflower, a vigorous variety with 
large sweet-scented flowers. Gloxinia ' France,' large garnet-red velvet flowers 
with a slender red-purple edging. Heliotrope ' Souvenir ' is covered with 
umbels of large violet flowers throughout the summer. Sweet William 
' Adrianople,' brilliant colour. Petunia ' Roi des Parterres vari6,' numerous 
flowers, varying from white to purple. Single pink Pyrethrum, large-flowered, 
comes true from seed. Hybrid Rehmannia from R. angulata and R. Henryi 
