It was too far off to enable me to remark its outline; yet on straining my sight-the atmosphere being very exquisitely clear-I thought I could distinguish the projections of peaks, of rounded slopes, and aerial angularities in places which, in the refractive lens of the air, looked, with their hue of glassy azure, like the loom of high land behind the coastal line.
"The Frozen Pirate"
W. Clark Russell
The prism is made of a stronger gelatine solution, which is more refractive than the gelatine around it.
"The Mechanism of Life"
Stéphane Leduc
In A. frostiana and the pale forms of the species the spores are nearly globose or oval, rarely with a tendency to become elliptical, but the content is quite constantly finely granular, while the spores of A. cothurnata are perhaps more constantly globose or nearly so, but the spore is nearly filled with a highly refractive oil globule or "nucleus."
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson