Charles Darwin an Ernst Haeckel, Down, 3. März 
DOWN. | BROMLEY. | KENT. S. E. | Mar 3.
My dear Sir
I received a week since your most kind present of your work on Radiolariæ. It is one of the most magnificent works which I have ever seen, & I am proud to possess a copy from the author.
It is very interesting & instructive to study your admirably || executed drawings; for I had no idea that animals of such low organization could develope such extremely beautiful structures. –
I hope you are able to work hard on science & thus banish, as far as may be possible, painful remembrances. ||
With cordial thanks for your magnificent present, & with sincere respect
Believe me my dear Sir
yours very faithfully