https://books.google.com/ngrams/graph?content=effusive&case_insensitive=on&year_start=1860&year_end=1870&corpus=15&smoothing=0&share=&direct_url=t4%3B%2Ceffusiv

https://books.google.com/ngrams/graph?content=effusive&case_insensitive=on&year_start=1860&year_end=1870&corpus=15&smoothing=0&share=&direct_url=t4%3B%2Ceffusive%3B%2Cc0%3B%2Cs0%3B%3Beffusive%3B%2Cc0%3B%3BEffusive%3B%2Cc0%3B%3BEFFUSIVE%3B%2Cc0 https://books.google.com/ngrams/graph?content=effusive&case_...