The table-topped hills of Almeyrin (or Almeirim) and Erere, which lie near the lower Amazon and rise to heights of 800 and 900 ft., are generally considered the southernmost margin of this plateau, though Agassiz and others describe them as remains of a great sandstone sheet which once covered the entire Amazon valley.
Traces of a large inner post-Glacial lake, similar to Lake Agassiz of North America, have been discovered.
Bates (1848-1859), Hermann Burmeister (1850-1852), Louis Agassiz (1865-1866), Charles Frederick Hartt (1865-1866, 1872 and 1875-1878) and Karl von den Steinen (1884-1885 and 1887-1888).
A second branch experimental farm is at Brandon in Manitoba, a third is at Indian Head in Saskatchewan and the fourth is at Agassiz in the coast climate of British Columbia.
Tyndall's own summary of the course of research on the subject was as follows: The idea of semi-fluid motion belongs entirely to Rendu; the proof of the quicker central flow belongs in part to Rendu, but almost wholly to Agassiz and Forbes; the proof of the retardation of the bed belongs to Forbes alone; while the discovery of the locus of the point of maximum motion belongs, I suppose, to me.
I should say that those New England rocks on the sea-coast, which Agassiz imagines to bear the marks of violent scraping contact with vast floating icebergs--I should say, that those rocks must not a little resemble the Sperm Whale in this particular.
The last of these was that of Louis Agassiz (1807-1873), who, whilst surveying all previous classifications, propounded a scheme of his own (Essay on Classification, 1859), in which, as well as in the criticisms he applies to other systems, the leading notion is that sub-kingdoms, classes, orders and families have a real existence, and that it is possible to ascertain and distinguish characters which are of class value, others which are cnly of ordinal value, and so on; so that the classes of one sub-kingdom should on paper, and in nature actually do, correspond in relative value to those of another sub-kingdom, and the orders of any one class similarly should be so taken as to be of equal value with those of another class, and have been actually so created.
Dana and Louis Agassiz had already arrived at the same conclusion.
The visit of Professor Louis Agassiz to the Amazon in 1865 resulted in a list of 1143 species, but it is believed that no less than 1800 to 2000 species are to be found in that great river and its tributaries.
He made the first elaborate reports of popular scientific lectures by Louis Agassiz and other authorities.