At this time he was occupied with other subjects, and the books which, for some time past, he had been reading, were either chemical, or on some other branch of natural or technical science.
Orain beste gai batzuek arduratzen zuten, beste idatzi batzuk irakurtzen zituen, eta hain zuzen ere arestian fisika, kimika eta teknologiari buruzko obrei ematen zien lehentasuna.