Mapoteca Geologica Americana

belongs to the geological predecessors and pioneers whose works have been appropriated without citing them. But very few scientists are capable of re-establishing the truth, and often when they know it they dislike to make it public and expose the piracy of a fellow scientist. The only remedy for this evil is the reputation which each one possesses in science. He who respects and cites all the maps and works of his predecessors is sure of having the reputation of an honest observer, even when his works are disagreeable to some of his co-laborers. While he who appropriates right and left the works of others is soon known and cited as an unscrupulous compiler, and of doubtful standing as a geologist.

Almost all the geological maps cited in this "Mapoteca" are in my library-especially all the pioneer maps, a few of which are very rare, and command a high price.

The public libraries of Cambridge and of Boston have allowed us to complete what we lacked. There is only a very small number of maps, hardly a dozen, that I have not seen, and in this case I have always added the word unseen. Some of these even I have seen in European libraries nearly thirty years ago, at a time when I did not think of making a catalogue.

Notwithstanding all the care and diligence with which I have searched for years, a number of geological maps of America must have escaped me, as happens in all catalogues, but I believe that nothing important will be found wanting.

This list stops with the year 1881, inclusive.

L-AMERICA IN GENERAL, COMPRISING BOTH NORTH AND

SOUTH AMERICA.

1843-Boué (Ami). Carte géologique du globe terrestre. Paris, 1845. In one sheet only. America is colored geologically, with the data then known, which covered only about one-twelfth of the whole continent. The rest is mere conjecture. It is a bold attempt at generalization with a small basis of facts. It was republished by Edward Hitchcock, without the name of Boué, under the title of "Outline of the geology of the globe." 1853. Accompanying "Outline of the geology of the globe, and the United States in particular", by Edward Hitchcock. Boston, 1854.

An English edition, by A. K. Johnston, appeared in 1855 in his Physical atlas of natural phenomena, Plate I, under the title "The geological structure of the globe according to Ami Boué." Edinburgh, 1855.

A German edition, in Berghans Physikalischer Atlas, appeared in 1856 ? Plate 9, under the title "Geologische Erdkarte nach Ami Boué und K. John ston von Traugott Bromme." Stuttgart, 1856 ?

1848-Taylor (R. C.). Chart showing the position of the coal fields on the surface of the globe.

Accompanying "Statistics of coal." Philadelphia, 1848.

A second edition was published by Haldeman.

1849-Buch (Leopold von). Die Verbreitung und die Greuzen der Kreide-Bildungen. Mercator projection.

Accompanying "Betrachtungen über die Verbreitung und die Greuzen der Kreide-Bildungen"; Verhandlungen des naturhistorischen vereins der Preussischen Rheinlande und Westphalens. Bonn, 1849.

A very small map, showing, in black etching, the geographical distribution of the cretaceous rocks in North and South America. Also issued separately.

1853-Hitchcock (Edward). Outline of the geology of the globe. Accompanying "Outline of the geology of the globe, and the United States in particular." Boston, 1854.

See Boué (Ami), 1843-No. 1.

1855-Boué (Ami). The geological structure of the globe according to Ami Boué.

Accompanying "Physical atlas of natural phenomena", by A. K. Johnston, Plate I. Edinburgh, 1855.

See Boué (Ami), 1843-No. 1.

1856-Boué (Ami) and Johnston (K.). Geologische Erdkarte nach Ami Boué und K. Johnston von Traugott Bromme.

Accompanying "Berghaus Physikalischer Atlas," Plate IX. Stuttgart,

1856?

See Boué (Ami), 1843-No. 1.

1860-Marcou (Jules). gique de la terre. land), 1861.

Geological map of the world Carte géolo-
Scale 1: 23,000,000. Winterthur (Switzer-

In eight sheets. In this map localities of which the geology was unknown were left blank. Reductions of it appeared in Elisée Reclus "La Terre," Vol. I, Les continents. "Carte géologique du Monde, d'après Jules Marcou." Plate II, p. 30. Paris, 1868. Of this there are four editions. By an oversight of the translator, Mr. Henry Woodward, the author's name was omitted in the English editions entitled "The Earth," by Elisée Reclus.

Prof. Oscar Fraas reproduced a reduction of the first edition of this map in his "Vor der Sündfluth," Stuttgart, 1865, with the author's name omitted; in the subsequent editions of his work he repaired his forgetfulness. In 1872 a reduction of the first edition, in one sheet, appeared in Vienna, in the "Physikalische Karten," published by Artaria & Co. under the title "Geologische Uebersichtskarten der Erde nach Marcou."

1865-Marcou (Jules). Geological map of the world (reduction of). Accompanying "Vor der Sündfluth," by Oscar Fraas. Stuttgart, 1865. See Marcou (Jules), 1860-No. 7.

1867-Simonin (Louis). Carte des terrains houillers du globe et de l'exportation du charbon anglais d'après Taylor, Marcou et les documents officiels.

Accompanying "La vie souterraine, ou les mines et les mineurs." Carte I, p. 32. Paris, 1867.

It is a reduction of R. C. Taylor's chart, with additions from the first edition of Marcou's Geological map of the world.

10.

1868-Marcou (Jules). Carte géologique du monde d'après Jules Marcou.

Accompanying "La Terre," by Elisée Reclus, Vol. I, Plate II, p. 30. Paris, 1868.