Direct link to the article
https://archive.org/details/sim_amer...ge/20/mode/2up
Scroll down about 1/3 here for more information, including a 1897 study & Charles Askins quoting W.A. King.
The issue seems to have been "overlap"
https://docs.google.com/document/d/1...vwLYc-kGA/edit
(All you have to do is L click your mouse thingie on the link Bill
)