Part of the data ring
ReadLength
Two extents, one measure

The Economic Aspect of Geology vs The War in the Air

Both counted from their full texts, the same way, on the same day.

The Economic Aspect of Geology

157,066
words · 10h 28m
Longer
vs

The War in the Air

156,625
words · 10h 27m

441words between them — 2 min of it

The Economic Aspect of Geology is longer — 157,066 words against 156,625 for The War in the Air, a difference of 441 words or about 2 min of extra reading. The Economic Aspect of Geology is the harder read, at grade 13.8 against 9.4.

SOURCE·Project Gutenberg full texts·both editions counted the same way·REVIEWED JUL 2026

Side by side

The Economic Aspect of GeologyThe War in the Air
AuthorLeith, C. K. (Charles Kenneth)Raleigh, Walter Alexander, Sir
Words 157,066 156,625
Reading time at 250 wpm 10h 28m 10h 27m
Unique words 8,144 10,870
Sentences 6,567 8,228
Average sentence length 23.9 words 19 words
Reading grade 13.8 9.4
Reading ease 38.8 61.4
Long words 20.3% 12.1%

Highlighted cells are the larger figure — except reading ease, where higher means easier.

SOURCE·Project Gutenberg full texts·both editions, same counting rule·REVIEWED JUL 2026

How this is worked out

  1. Both texts are counted the same way, from the same source, with Gutenberg's header and licence footer struck first.
  2. The gap is stated in words and then in time at 250 words a minute — the rate is printed because a duration without one cannot be checked.
  3. Difficulty is compared on Flesch–Kincaid grade, which reads sentence and word length only. It cannot see irony or dialect, so treat it as a measure of surface, not of effort.
gap = |157,066 − 156,625| = 441 words
441 ÷ 250 wpm = 2 min of extra reading

Full methodology →

The second question

Which is longer, The Economic Aspect of Geology or The War in the Air?

The Economic Aspect of Geology is longer — 157,066 words against 156,625 for The War in the Air, a difference of 441 words or about 2 min of extra reading. The Economic Aspect of Geology is the harder read, at grade 13.8 against 9.4.

Colophon

Both figures computed from Project Gutenberg plain-text editions — ebook no. 27842 and no. 28226 — and from no other source. Neither book’s text is set on this site.

SOURCE·Project Gutenberg full texts·US public domain·REVIEWED JUL 2026

Word counts and reading levels are computed from a specific public-domain edition and will differ from other editions and from other counting methods — see the method page.

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Amit Sharma

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