ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
209 
Winter Condition of some Puget Sound Algae. — Annie May Hurd 
( Puget Sound Marine Station Publications , 1917, 1., 341-7). The winter 
flora does not differ much from that of summer. In spring the young 
forms of summer species appear. Some summer species of the Atlantic 
coast are present in Puget Sound all the winter. Conspicuous seasonal 
(summer) algae are Nereocystis , Gostaria , Laminaria bullata, L.'saccharina , 
Soranthera ulvoidea, Desmarestia aculeata , Scy to siphon lomentarius , 
Odonthallia floccosa. Young plants of some species occur during the 
winter, but become much more abundant in March. Many red 
algae reproduce all through the winter. Fucus plants remain sterile 
until February. Agardhiella , Polysiphonia and other red algae produce 
both sexual and asexual spores all the winter, though on the Atlantic 
coast they are reported to pass through these generations at distinct 
seasons. In the case of Polysiphonia calif ornica the carposporic plants 
are more abundant towards the end of winter, suggesting a partial 
seasonal separation between the two generations. A. Gr. 
Experiments with Marine Alg3e in Fresh-water. — Lola B. Brown 
(Puget Sound Marine Station Publications, 1915, I., 31-4, fig.). The 
results show that Enteromorpha intestinalis can live and grow up for 
five weeks in fresh-water, and probably it would occur in fresh-water 
but for the bacteria. Certain brown algse common in the district 
were killed by fresh-water in a few days. Other algae showed slightly 
more endurance. A. G-. 
Fungi. 
Wart Disease of Potato. — {Weekly News Letter, Washington, 1921, 
8, Ho. 30, 3). The writer announces that the wart disease caused by 
Synchytrium endobioticum also attacks tomato plants. The disease, 
well-known in Europe, was discovered in America in 1918. Out of 
twenty-eight varieties of tomatoes planted in wart-infested gardens in 
Eastern Pennsylvania twenty-six were found to be susceptible to the 
disease. A. Lorrain Smith. 
Mycoplasm Theory — is it dispensable or not ?— Jakob Eriksson 
(Phytopathology, 1921, 11, 385-8). Eriksson discusses the arguments 
adduced by various workers to account for the propagation of rust 
without having recourse to the mycoplasm theory. He also answers 
objections that have been brought forward against his views, more 
especially as to the presence of mycoplasm in potatoes infested with 
Phytophthora . He gives also an account of the stages through which 
mycoplasm passes before becoming mycelium in spinach mildew. 
A. L. S. 
Fusarium cubense Hyphomycete injurious to Banana in the 
Philippines. — H. A. Lee and F. B. Serrano ( Philip . Agric. Bureau , 
Manila, 1920, 13, 128-9 ; see also Bull. Agric. Intell. Rome, 1921, 12, 
511-2). A banana wilt at Porto Rico had already been proved to be 
caused by Fusarium cubense. The authors have investigated a similar 
wilt in the Philippines, and have isolated a Fusarium which corresponds 
with F. cubense. The Latundan variety of the banana ( Musa sapientum ) 
is the only one found to be susceptible so far. A. L. S. 
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