From Vol II "Circle of Science" 1850

[John Donne]

These pages may be downloaded and printed for easy reading.

[John Donne]

Another historically interesting plate from the same book.
An Egyptian planisphere

[John Donne]

These post are from this 1850 book.

[Makuser]

Thanks for these scanned images from this old book John. Looking at "antique" astronomy works is most fascinating as they were the building blocks of what we catalogue and chart to this day.

[John Donne]

Thanks for these scanned images from this old book John. Looking at "antique" astronomy works is most fascinating as they were the building blocks of we catalogue and chart to this day.

Thank you Marshall. And the details in this particular article about lenses, etc. still apply in the basic form.
Stay well my friend!

[GCoyote]

I enjoy science as history so thank you for these, John.