RR Auction Home
Current Auction Is Open For Bidding
Home |Sitemap|Contact Us| Past Auctions  
 How to Bid   Register to Bid   Auctions   Consign   About Us   Featured Lots   Reviews 
Bidder Login
Show Password

New Bidder Registration
Forgot your password?

The Current Auction
Ends February 10th
Presidents Auction Preview
Begins Feb 11
Advanced Search
By Item Number
Gallery Search
Past Auction Search
How Do I Bid?
What is BidTracker™?
New Bidder Registration
The 30-Minute Rule
Terms and Conditions
New to RR Auction?
About Us
Register to Bid
Jobs at RR Auction
Press Releases
Consign to RR Auction
How to Consign
2021 Auction Calendar
Jan 13
Jan 21
Feb 10
Feb 18
Mar 10
Mar 18
  View All Dates & Deadlines

Item 429 - Charles Darwin Catalog 418 (Nov 2013)

Back To Previous Page
(we are no longer accepting bids on this item)
Minimum Bid: $300.00
Sold Price: $12,544.80 (includes buyer's premium)


ALS, one page, 5 x 8, Down Bromley letterhead, February 25, 1868. Letter to zoologist Henry Lee. In full: “I am very much obliged for your kindness in sending me the results about the sexes of trout. I am anxious to ascertain approximately the proportional number of the sexes in any animals; but there are so many causes of error that I fear I shall not succeed. With my best thanks for your information.” In fine condition, with central horizontal and vertical folds, with vertical fold passing through a single letter of signature. Accompanied by the original mailing envelope addressed in Darwin’s hand.

Busy at work on his second book on evolutionary theory, The Descent of Man, and Selection in Relation to Sex, Darwin was wrestling with the issue of how to explain the near equal proportion of sexes in conjunction with natural selection. Outlining the basic principles of sexual selection in the second section of the book, Darwin provided a detailed review of many different taxa, including a specific chapter on cold-blooded vertebrates, in which his research on trout came to use. He offered a brief description of frequency-dependent selection in the book’s first edition, released in 1871—the logic that the probability of an individual being able to breed is dependent on the frequency of the opposite sex in relation to its own—but with lingering questions, removed it from the second edition. An excellent note touching on a subject that Darwin eventually left for future generations to investigate. Pre-certified John Reznikoff/PSA/DNA and RR Auction COA.

Terms and abbreviations used in our descriptions.


Click image to enlarge Click image to enlarge

Important Information

Tips For Consignors


For a complete list of auction beginning and ending dates, check our dates and deadlines page.