In July of last year there bloomed in my garden a fine plant of that variety of evening primrose known as “Lamarckiana”(Œnothera Lamarckiana). I had been advised by an Entomological friend to procure this flower with the view of attracting moths at night, and found it to succeed admirably. Its lovely yellow petals expand suddenly about seven o'clock every evening, and diffuse a fragrance all around very attractive to Sphingidae and other nocturnal moths. The flowers expand about three inches and are very beautiful; they remain expanded until some time after sunrise the following morning, when they close to open no more.