380 
SUMMARY. 
birds, too, were with us, returning td the mysterious 
North; the anatinag, represented by the eiders {Soma- 
teria), followed by two of the uria genus, the grylle 
and the alke. We recognized the latter as our little 
fat friend of last summer, and gave him treatment ac- 
cordingly. I shot thirty-three in one day, which my 
mess-mates made up to sixty. 
The characteristic disease of May was the snow- 
blindness, severe and acute, leaving with some of us a 
disturbed, uncertain state of vision far from pleasing. 
The remedy most effective was darkness. A disk of 
hard wood, with a simple slit, admitting a narrow pen- 
cil of light, we found a better protection than the gog- 
gle or colored lens ; the increased sensibility of the ret- 
ina seeming to require a diminution of the quantity 
rather than a modification of the character of the ray. 
The slightest automatic movement varied, of course, 
the sentient surface affected by the impression. 
