"If we count the gradual increase of china in Indian houses during the recent decades, and sit down to judge as future archaeologists with as mechanical an approach as is evident among those who equate pottery with people, we would find the entire country suffused by a new people. The same inference would be drawn from the sudden popularity of stainless steel followed by aluminum alloy and the like."
January 1, 1970
https://en.wikiquote.org/wiki/Migrationism_and_diffusionism