outset that I was going to ignore the names of most aberrations, but he goes on publishing them with a zeal which is almost inordinate.  Since my return to the United States from my trip to Mexico, I have been very very much occupied with work, and have about accomplished my revision of the Butterfly Book, a copy of which, when it comes through the press I shall do myself the honor of sending you.  I have greatly increased the number of plates and also of the text.  I hope that when it appears that it will be the last word on the lepidoptera of the region north of the Rio Grande.  Of course there are a number of species which you find south of that river, and which are Mexican, as well as occupants of the United States.



With assurances of the highest esteem and everlasting regard, I am, faithfully