1gO The American Geologist. March, 1902 
presented it personally to professor Goudry,’—(Gaudry)—“and on the 
termination of the Congress he returned it to me and it is now in my 
possession.” * * * 
The undersigned was therefore misinformed, and corrects herewith 
his unintentional error. 
This is not the place to consider the propriety of the action of the 
United States in sending three employés of one of its bureaux as its 
representatives to a purely scientific congress. It is an innovation, so 
far as the International Congress of geologists is concerned, dating 
subsequently to the Ztirich Congress of 1894, where Prof. Renevier 
and his committee of organization first awakened the official world to 
the possibilities inherent in the idea of “delegate.” The realization of 
these possibilities diminishes the influence of the independent unattached 
worker through the effulgence of. the red seal and autograph of the 
premier of a great country, yet the humble toiler’s regret at his 
shrunken proportions will be mitigated by the: 
* %* * “consoling thought to feel 
He paid the taxes which impelled the steel.” 
(with apologies to Byron). 
March 3, 1902. Persiror Frazer. 
Tue DerIVATION OF THE Rock NAME “ANortHosiTe.” In the Jan- 
uary, 1902, number of the AMERICAN GEOLOGIST, in a review of my 
Rand hill paper, the reviewer, F. B., makes the following statement ;— 
“In spite of the place which the term anorthosyte has won in petro- 
graphic literature it seems questionable whether the term should be 
allowed, by its retention, to perpetuate an early inaccuracy in the de- 
termination of the feldspar species.” Similar statements have been 
frequent in recent literature and all seem to the writer to be based on 
a misconception of the derivation of the word. 
The Canadian geologists originated and have since consistently used 
the name. They distinctly state its derivation from Delesse’s term 
“anorthose”’ which he proposed to include the group of triclinic feld- 
spars, and as a convenient generic name to distinguish them from fhe 
monoclinic orthoclase “‘orthose.”’ *They clearly recognized that the 
feldspar in the rock varied from andesine to anorthite, labradorite be- 
ing the more common form, Anorthose as used by Delesse means 
precisely the same thing as the current term plagioclase. Anorthosyte 
was not proposed for an anorthite rock in especial nor is the name 
indicative of such derivation. Anorthityte would be the form were it 
so. 
Time has clearly shown that the name was unfortunately chosen, 
as evinced principally by the amount of misconception which has arisen 
concerning it. Moreover Delesse’s term has never passed into usage 
and has since been appropriated to another usage, anorthose now mean- 
ing anorthoclase. Yet curiously the misconception to which the term 
*Geology of Canada. 1 aaa, pp. 22, 83-35, 588-90. 
F. D, Apams, Neues Jahrb., Reil.-band viii, p. 423. 
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