332 The American Geologist. May. i898 
were found in small quantities in the Montana mine, at Sou- 
dan, Minn., on the Vermilion iron range. (See this journal, 
vol. 19, p, 417). Now it is reported that a body of native 
copper weighing several tons has been found in the same 
mine at a depth of 700 feet from the surface. 
Maryland Geological Survey. The Maryland legisla- 
ture, in addition to passing the regular appropriations of 
$20,000 for the state geological survey, has also appropria- 
ted to the same organization $10,000 for topography and 
$20,000 for the study of the question of road construction in 
the state. The latter act calls for the investigation of and 
report upon the character and distribution of the natural 
road building materials in the several counties and a full 
statement regarding the present condition of the roads and 
the best means for their improvement, with estimates of 
cost of constructing, repairing and maintaining the same. 
Such universal approval has been accorded by the people 
and press of the state to the geological survey that the acts 
passed both houses unanimously. The entire appropriation 
has been placed under the direction of Prof. Wm. B. Clark, 
of John Hopkins University, the state geologist. {Science.) 
Jules Marcou died at his home in Cambridge, Mass., on 
April 17th. He was born in France on April 20th, 1824, and 
had thus almost completed his 74th year. Prof. Marcou is 
well known both in Europe and in America, his adopted 
home, from his geological work and writings. His geologi- 
cal map of the United States and his early publications on 
the geology of the southwestern states, especially on the 
Mesozoic, have made him an important factor in the devel- 
opment of geological knowledge in the United States. He 
was associated with Louis Agassiz,and a few years ago pub- 
lished a life of that distinguished naturalist. 
Mr. Marcus Baker delivered the annual address before 
the Philosophical Society of Washington on April 2nd. The 
subject was "A century of geograph)' in the United States." 
A. Des Cloizeaux. A biographical notice of this dis- 
tinguished French mineralogist was read by Prof. A. La- 
croix before the French Society of Mineralog}' at the meet- 
ing of Dec. 9, 1897. This notice, accompanied b)' a portrait 
and a bibliography, appears in the last number of the Bulle- 
tin of the Society (vol. 20, no. 8, Dec, 1897). 
Popocatepetl and Orizaba. The various determina- 
tions of the hights of these two great Mexican mountains 
are given by Mr. A. E. Douglass in "Appalachia" for March, 
1898. Omitting a number of the least reliable determina- 
tions and getting the mean of the others, Mr. Douglass gives 
the altitude of Popocatepetl as 17,660 feet with a possible er- 
ror of 50 feet, and of Orizaba as 18,240 feet with a possible 
error of 160 feet. 
