# Lectures on popular and scientific subjects

Author: Caithness, James Sinclair, 14th earl of, 1821-1881

Genre: Category: History - Modern (1750+)

Language: English

License: Public domain

Source: https://www.gutenberg.org/ebooks/15468

Amazon editions: https://www.amazon.com/s?k=Lectures+on+popular+and+scientific+subjects+Caithness&tag=cyberlibrar00-20

## Summary

There are few subjects of more importance, and few less known or thought about, than our coal-mines. Coal is one of our greatest blessings, and certainly one originating cause of England's greatness and wealth. It has given us a power over other nations, and vast sums of money are yearly brought to our country from abroad in exchange for the coal we send. Nearly £17,000,000 is the representative value of the coal raised every year at the pit's mouth, and £20,000,000 represent its mean value at the various places of consumption. The capital invested in our coal-mining trade, apart from the value of the mines themselves, exceeds £20,000,000 sterling, and the amount of coal annually extracte...

## Chapters

- [Chapter 4](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/4/index.md)
- [Chapter 5](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/5/index.md)
- [Chapter 3](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/3/index.md)
- [Chapter 6](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/6/index.md)
- [Chapter 8](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/8/index.md)
- [Chapter 2](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/2/index.md)
- [Chapter 7](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/7/index.md)
- [Chapter 1](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/1/index.md)
- [Chapter 9](https://www.cyberlibrary.org/en/books/lectures-on-popular-and-scientific-subjects-15468/chapters/9/index.md)