It takes the average reader 6 hours and 50 minutes to read The Natural History of Igneous Rocks by Alfred Harker
Assuming a reading speed of 250 words per minute. Learn more
Alfred Harker (1859-1939) was a prominent petrologist who spent his career at St John's College, Cambridge, lecturing on and researching rock formations and related geological activity. He was elected a fellow of the Royal Society in 1902, and was president of the Geological Society from 1916 to 1918. He used his Cambridge lectures as the foundation for this book (first published in 1909), offering an introduction to the development of rocks and related volcanic activity. With more than one hundred diagrams of various aspects of geological formations, this work also provides a visual guide to the location and formation of igneous rocks. Over the course of the work, he covers the themes of vulcanicity, rock structure, crystallization, the role of magma and the principles of rock classification, giving a broad picture of the field of petrology around the beginning of the twentieth century.
The Natural History of Igneous Rocks by Alfred Harker is 404 pages long, and a total of 102,616 words.
This makes it 136% the length of the average book. It also has 125% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 9 hours and 20 minutes to read The Natural History of Igneous Rocks aloud.
The Natural History of Igneous Rocks is suitable for students ages 12 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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