Summary

Portrait of Edward Whymper Edward Whymper Scrambles amongst the Alps — Chapter 17 (1871)

Hence, any man, who is not a fool, takes particular care to preserve his balance, and, in consequence, we have the noteworthy fact that accidents have seldom or never taken place upon ice-slopes.
The same slopes covered with snow are much less impressive, and may be much more dangerous. They may be less slippery, the balance may be more easily preserved, and if one man slips he may be stopped by his own personal efforts, provided the snow which over-lies the ice is consolidated and of a reasonable depth.
Source: Wikisource

Portrait of Edward Whymper Edward Whymper Scrambles amongst the Alps — Chapter 17 (1871)

It is generally admitted that veritable ice-slopes (understanding by ice something more than a crust of hard snow over soft snow) are only rarely met with in the Alps. They are frequently spoken of, but such as that to which I refer are very rarely seen, and still more seldom traversed. It is, however, always possible that they may be encountered, and on this account, if for no other, it is necessary for men who go mountaineering to be armed with ice-axes, and with good ones.
Source: Wikisource

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