656 General Notes. [July 
DESCRIPTION OF PLATES. 
PLATE XXII. 
Fics. 1-3. Modified chloritic schist at contact with a diorite to which it e asini 
pa f 
e an ia 
a large corroded crystal of calcite iş shown as appearing between 
crossed nicols. 
FIG. 4. A section of the large dyke of coarse diabase northeast from Michipicoten 
Island, at the western limit of the bay. The section shows only augite and labradorite i 
in iaig ary light. 
G. 5. Pseudomorphs of chlorite after mic 
re 6. A estes twin of orthoclase — a Torana | 
Fic. 7. Diabase-aphanite toping the c onglomerate on EET Island. A 
fine pag of lag lase is sae red in a cryptocrystalline 
Gc. 8. T augite passing to uralite, from dyke of Ma at Dog Riv 
Fi E 9. View of the schist a l apni at Dog River. Greatly reduced pa 
a raph. } 
he 10. ee north and south section of the Lake Saperiot basin, partly 
ter Irving. 
_ PLATE XXIII, 
Fic. 1. Section of quartz-porphyry from apo! ns alae Island. 
Fic, 2. Altered mica-schist from a boulder in the conglomerate. 
Fics. 3 and 4. Pseud 
F : 
system 
ue F will give a synopsis of the description of this group, : such 
as has been given by Cope. 
` “3. I will analyze the opinions expressed by Messrs. Wortman 
and Schlosser as to this grou 
“4. Iwill study the principles developed by the investigation t 
"of this group, in order to show that its different memod a an 
P obably 5 or ?) of certain orders of mamn 
“i 5. I will finally inquire aia the European fauna does 
* Etudes sur P Histoire Paléontologique des Ongulés en Améri ue et a P 
I. Groupe Primitive de l’Eocéne i celica. Par Marie Pavlow, jtor 
