146 
Articles in the December issue are: 
‘¢On the Magnetic Field of the Earth,’’ by L. 
Steiner. 
‘«The Physical Theory of the Earth’s Magnetic 
and Electric Phenomena, No. IV.,’’ by L. A. 
Bauer. 
‘«Atmospherie Electricity Observations on the 
Second Cruise of the Carnegie from New York to 
Colombo,’’ by EH. Kidson. 
‘On the Normal Magnetic Elements at the 
Mauritius Magnetic Observatory,’’ by L. A. Bauer. 
TREMATODE GENERIC NAMES PROPOSED 
FOR THE ‘‘OFFICIAL LIST OF 
ZOOLOGICAL NAMES’’ 
1. The International Commission on Med- 
ical Zoology, appointed by the Graz Interna- 
tional Zoological Congress, has made its first 
report on the names of Trematode genera 
parasitic in man. 
9. Four members, namely, Blanchard 
(Paris), Monticelli (Naples), Stiles (Wash- 
ington) and Zschokke (Basel), unanimously 
agree that the following eleven names are 
from the present standpoint of systematic 
zeology and nomenclature, the correct names 
for the genera in question, and that the spe- 
cies cited as genotypes are the correct types 
according to the International Rules of Zool- 
ogical Nomenclature. 
Clonorchis Looss, 1907, Feb. 1, 147-152, type 
sinensis. 
Dicrocelium Dujardin, 1845a, 391, type lanceatum 
=lanceolatum (==? dendriticum sub judice). 
Fasciola Linneus, 1758a, 644, 648-649, type hepa- 
tica. 
Fasciolopsis Looss, 1899b, 557, 561, type buskii 
(seu buski teste Blanchard). 
Gastrodiscus Leuckart in Cobbold, 1877e, 233-239, 
type sonsinoit (seu sonsinot teste Blanchard). 
Heterophyes Cobbold, 1866a, 6, type egyptiaca = 
heterophyes. 
Metorchis Looss, 1899b, 564-566, type albidus. 
Opisthorchis Blanchard, 1895f, 217, type felineus. 
Paragonimus Braun, 1899g, 492, type westermanii 
(seu westermanni teste Blanchard). 
Pseudamphistomum Luehe, 1908, 428-486, type 
truncatum. 
Watsonius Stiles & Goldberger, 1910, 212, type 
watson. 
SCIENCE 
[N.S. Vou. XXXV. No. 892 
8. The following commissioners have not 
voted: Jaegerskioeld (Gothenburg), Looss 
(Cairo), Luehe (Koenigsberg), Pintner (Vi- 
enna) and Shipley (Cambridge). 
4. Notice is hereby given that the under- 
signed will wait until July 1, 1912, for any 
zoologist to raise objection to any portion 
of this report, and that on that date all names 
to which valid objection is not raised will be 
forwarded to the International Commission 
on Zoological Nomenclature with the motion 
that these names be included in the “ Official 
List of Zoological Names” provided for by the 
Graz Zoological Congress. 
5. All correspondence on this subject should 
be addressed to C. W. STILEs, 
Secretary International Commission 
on Zoological Nomenclature 
HYGIENIC LABORATORY, 
WASHINGTON, D. C., 
November 11, 1911 
SPECIAL ARTICLES 
NOTES UPON CRONARTIUM RIBICOLA™ 
A NUMBER of new points have been worked 
out in connection with this fungus during the 
past year. A coarse yellow mottling of pine 
needles and of the bark on the twigs and 
leader occurs rarely, but is very characteristic 
when it does occur. It seems to occur only 
in trees which have had the disease for more 
than one year. It has developed in the green- 
house upon plants which were known to be 
infected and has been found in one lot of trees 
set out in the field. 
In 1910 an attempt was made by the speaker 
to pick out all the infected trees in a lot of 
10,000 three-year-old white pines. The re- 
mainder were then planted out by state au- 
thorities in a large open field where every tree 
could be easily found the next year, and in a 
locality where Ribes were absent for a con- 
siderable distance. An examination the next 
summer showed a considerable number which 
had swellings of the bark, but none were 
found with fruiting bodies of the Perider- 
1 Presented before the American Phytopatholog- 
ical Society, December, 1911. 
