At least that is as I then understood it.
De Lesseps was not an engineer and knew little of science.

His Company's failure was directly due to his ignorance and disregard of the advice of competent men.
Manual labour on the canal has been done mostly by Jamaica negroes.

As said before, they are immune to yellow fever; and, speaking of the negro, it may be said here that his susceptibility to pain, compared to that of the white man, is as one to three, but the effect of a fair education is to increase it by one-third.

What then is that of the monkey, the bird, the reptile or the fish?
May I dare the statement, though most of us perhaps know it, that the sensitiveness of woman to that of man is as fifty-three to sixty-four.

Even the woman's sense of touch, as in the finger-tips, being twice as obtuse as man's.