In general the artist seemed to be obsessed with flying machines and underwater breathing apparatus. I was going to remark how prophetic the SCUBA images were, but it turns out that practical SCUBA dates back at least to 1825.
Reminds me of a Wired magazine article from 1999 speculating on what the greatest invention of the 20th century was, and what the greatest invention of the 21st might be. One of the people interviewed suggested that in terms of inventions having an impact on everyday life, the greatest invention of the 20th century (which was a 19th century invention) was the bicycle and the greatest invention of the 21st would be (another 19th century invention) the telephone (because it was going to reach the other 75% of people who didn't yet have it thanks to cellphones).
Whoever that person was, 'e seems to have been spot on.