sphinx
24× in this editiona statue with a lion’s body and a human head
Original-edition reading analysis
A short novella with an exciting idea. The plot is easy to follow, but long descriptive passages and Victorian scientific language need B2-level reading stamina. Our recommendation for the complete original is B2 (strong B1 with support).
Updated

Short answer
For a B2 learner, yes. It is one of the shortest originals here, and the story pulls you forward. A strong B1 learner can manage with regular dictionary lookups, but expect the opening scientific discussion and long descriptions to feel slow.
Vocabulary profile
The bars show the share of running word tokens—not the share of unique dictionary entries. Common words repeat often, so token coverage is the more useful signal for how frequently a learner may meet unfamiliar language while reading.
These are TeakReader frequency-based vocabulary bands, not official CEFR assignments for every word or an official CEFR certification of the book. They are most useful as comparative reading signals.
Beyond the percentages

Useful words to preview
These manually reviewed words recur in the analyzed edition and are more useful to prepare than one-off names. Counts are case-insensitive and include the exact form shown.
a statue with a lion’s body and a human head
a white substance with a strong smell that burns easily
bars you push or pull to control a machine
shining with a light that is not steady
a low, heavy sound, like something falling
searching with your hands because you cannot see
not clear; hard to see or hear
small signs that remain of something that is gone
slowly damaged by chemicals or rust
a formal, old word for “the future”
A practical reading plan
Transparent methodology
We downloaded the UTF-8 plain-text edition from Project Gutenberg ebook 35, removed the standard Gutenberg header and footer, lowercased English word tokens, and matched them against the same ranked frequency data TeakReader uses for vocabulary analysis. We then combined token coverage with editorial review of syntax, narration, dialect, historical context, and wordplay.
Vocabulary coverage is informative but not a complete readability score. Research on reading comprehension commonly distinguishes knowing most running words from understanding every sentence; syntax and background knowledge still matter. See this Cambridge overview of lexical coverage research for context.
FAQ
We recommend B2 (strong B1 with support) for the original text. A short novella with an exciting idea. The plot is easy to follow, but long descriptive passages and Victorian scientific language need B2-level reading stamina. This is an editorial estimate based on vocabulary coverage and literary features, not an official CEFR rating.
It ranks 5 of 24 in our list of classic books by reading level (1 = easiest): short but descriptive. A reader who knows the B1 word bands knows about 95.79% of the words in the original text, and 97.46% at B2.
For a B2 learner, yes. It is one of the shortest originals here, and the story pulls you forward. A strong B1 learner can manage with regular dictionary lookups, but expect the opening scientific discussion and long descriptions to feel slow.
Graded editions usually remove the scientific discussion and shorten descriptions. This page analyzes the complete original in Project Gutenberg ebook 35.
We analyzed the Project Gutenberg plain-text edition (35) against TeakReader’s English frequency list. The analysis found 30,696 word tokens and 4,589 unique forms after removing Gutenberg’s header and footer. Proper names, dialect spellings, inflections, and tokenization can affect the result.
Yes. The edition analyzed here is available free from Project Gutenberg. TeakReader can search Project Gutenberg books and add them to a vocabulary-focused reading library. Availability can vary by country because copyright terms differ.