THE GEOLOGICAL MAP OF THE WORLD. 345 
yellowish white. Quills black; tail brownish black, tipped with 
white and with about four bands of white; cere and feet greenish 
yellow.” 
ON A SECOND EDITION OF THE ER LOGTOM: 
MAP OF THE WORLD 
BY JULES MARCOU. 
In 1859 I finished the manuscript of a geological map of the 
earth, which appeared two years after at Winterthur, Switzerland, 
in eight sheets, on a scale of 53 505.000: The map, prepared by the 
learned geographer, my friend M. J. M. Ziegler, on Mercator’s plan, 
although defective as regards certain details of execution resulting 
from my departure from Zurich to Boston, has, however, been re- 
ceived with favor by geologists as filling a desideratum in science. 
Some reductions and translations, with my consent, have been 
made in German, French and English. t 
I have now just finished the manuscript of a second edition, 
intended to be placed in the International Exposition of Vienna, 
in May, 1873. 
Not only have I carefully reviewed all the materials used in pre- 
paring the first edition ; but also profited by numerous and impor- 
tant additions published during the past fourteen years, and have 
had in my hands a certain number of inedited geological maps and 
observations, which have been very liberally furnished by geolo- 
gists who have explored and inhabited different countries remote 
and difficult of access. Let us pass in review very succinctly the 
more important of these new materials. 
In the Arctic regions several expeditions have enabled us to 
Color geologically a part of the islands of Spitzbergen, of Green- 
d, and to modify the geological age of the coal deposits of the i is- 
lands of Disco, Prince Patrick and Bank’s Land. M. Nord 
*Read before the Boston Society of Natural History, March 19, 1873. 
} From the negligence of Messrs. Oscar Fraas and Henry Woodward, my name has 
p 
an 
Henry Woodward, without any explanation, has contented himself with ampi irin 
y name from the block of the French ‘edition which appears in “La Terre”, by my 
Rec 
. 
