Part of the data ring
ReadLength
Two extents, one measure

Letters of Asa Gray vs A pair of blue eyes

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

Letters of Asa Gray

131,424
words · 8h 46m
Longer
vs

A pair of blue eyes

131,255
words · 8h 45m

169words between them — 1 min of it

Letters of Asa Gray is longer — 131,424 words against 131,255 for A pair of blue eyes, a difference of 169 words or about 1 min of extra reading. A pair of blue eyes is the harder read, at grade 8.4 against 6.6.

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

Side by side

Letters of Asa GrayA pair of blue eyes
AuthorGray, AsaHardy, Thomas
Words 131,424 131,255
Reading time at 250 wpm 8h 46m 8h 45m
Unique words 11,254 10,854
Sentences 9,607 6,641
Average sentence length 13.7 words 19.8 words
Reading grade 6.6 8.4
Reading ease 72 70.3
Long words 10.8% 8.2%

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 = |131,424 − 131,255| = 169 words
169 ÷ 250 wpm = 1 min of extra reading

Full methodology →

The second question

Which is longer, Letters of Asa Gray or A pair of blue eyes?

Letters of Asa Gray is longer — 131,424 words against 131,255 for A pair of blue eyes, a difference of 169 words or about 1 min of extra reading. A pair of blue eyes is the harder read, at grade 8.4 against 6.6.

Colophon

Both figures computed from Project Gutenberg plain-text editions — ebook no. 55987 and no. 224 — 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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