1893.] Seientifie News. 1115 
SCIENTIFIC NEWS. 
The Natural History Society of Dantzic offers a prize of 1250 francs 
for the best essay on the most efficacious means of destroying the 
poisonous insects in the forests of western Prussia. The essays must be 
written in German. or French and be sent to the Society before the 
end of 1898. 
Professor Loew, of Munich, has been elected to the chair of Chemical 
Argriculture in the University of Tokio. Professor Loew is well known 
from his researches on the nature of protoplasm. 
Dr. H. Móller has been appointed Professor of Botany in the 
University of Greifswald. 
An exploring and surveying expedition has been organized in Brazil 
to study the less known parts of the Amazon basin and to collect infor- 
mation as to ethnography and natural history. The expedition was 
intended to leave Santos in August, and cross the plateau of Matto- 
Grosso towards the upper waters of the Amazon, where surveys and 
scientific collections will be made 
The California Academy of Sciences has published a bibliography of 
the Paleozoie Crustacea, prepared by Mr. A. W. Vogdes. Besides the 
list of authors there is an index of the species described in each work. 
The literature ranges from 1698 to 1892. 
Erratum.—Through an oversight on the part of the engraver the 
figures (Plates XIX-XX) accompanying the paper on “ Eggs of Pity- 
ophis melanoleucus,” in the October NaRURALIST, were reduced one- 
quarter, while the accompanying legends were printed as in the origi- 
nal copy. The error neeessitates the substitution of the following for 
the table of explanations on page 885, and corresponding corrections 
in the legend subscribed to each figure. 
z ExPLANATIONS OF PLATES XIX, XX. 
Pityophis melanoleucus. 
Fig. 1—Cluster of seven eggs represented as they naturally cohcre. 
a at which an eighth egg was attached.; 3 natural 
Fig. as cracking of the calcareous crust—from an | equatorial 
region; x 74. 
