Referring to Burglehaus’ note on Syndesmon (OHIO NATURALIST, 1:72), I may say that I have a number of specimens from Eastern Kansas, all of which have sessile involucral leaves. Some of the specimens in the Ohio State Herbarium have sessile leaves, while others have involucral leaves with petioles one inch or less in length. That there can be no mistake in the interpretation of what is supposed to constitute an involucral leaf is shown from the following statement in Britton and Brown’s Flora, 2:50:—“Involucre of three compound sessile leaves; leaflets stalked.” Mr. S. E. Horlacher, of Dayton, Ohio, writes that all the specimens in his herbarium agree with the Flora in having sessile involucral leaves. There may be several forms of Syndesmon distinct enough to designate as varieties; there is at least a large amount of variation. J. H. SCHAFFNER. ------------------------------------------------------------------------ Ohio State University Six distinct and independent Colleges, each with a Dean and Faculty of its own. THIRTY SEVEN DEPARTMENTS. THIRTY DISTINCT COURSES. =AGRICULTURE, ARTS, LAW, ENGINEERING, PHARMACY, VETERINARY MEDICINE.= Superior facilities for education in Applied Science. Short or special courses for mature students not candidates for degrees. One hundred and twenty one instructors. Over thirteen hundred students. FINEST GYMNASIUM IN THE WEST. _For further information address the President_, =DR. W. O. THOMPSON, STATE UNIVERSITY, COLUMBUS=. Ohio Forest Trees Identified by Leaves and Fruit. By W. A. KELLERMAN, PH. D., Ohio State University. A neat pamphlet for every one who wishes to learn our native forest trees. Keys simple. Description plain. Can learn the names of the trees easily. Price reduced from 25 cents to =10 cents=. Also, =The Fourth State Catalogue of Ohio Plants=. Bound copies at cost of binding, namely =20 cents=. Gives list of scientific and common names; distribution by counties. Teachers and others will also be interested in Prof. Kellerman’s Phyto-theca or Herbarium Portfolio, _Practical Studies_ in Elementary Botany, _Elementary Botany_ with Spring Flora, all published by Eldredge & Bro., Philadelphia, to whom apply. For information or copies of _Forest Trees_ and _Catalogue_ or names of plant specimens of your region _address_ =W. A. KELLERMAN, COLUMBUS, OHIO= American Entomological Co. 1040 DE KALB AVENUE, BROOKLYN, N. Y. Lepidoptera Price List No. 2.—_Price 5 cents_ Refunded to Buyers ISSUED NOVEMBER 15th 1900. Dealers of all kinds of ... _ENTOMOLOGICAL SUPPLIES_