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5

of full-length figures, and 87 outline figures of structural characters (chiefly text-cuts). Probably 50-75 pages more of text only (the illustrations being all drawn) will complete the work; and should the treatment of the species belonging to the United States, in "Part II". meet with your approval, the concluding portion can be completed in about two weeks' time.

Special work accomplished during October consisted almost wholly of the preparation of the above-mentioned work, which involved so much labor of research and details of construction that no time could be spared for anything else.