3. The forest habitat of the University of Kansas Natural History Reservation. By Henry S. Fitch and Ronald R. McGregor. Pp. 77-127, 2 plates, 7 figures in text, 4 tables. December 31, 1956. 4. Aspects of reproduction and development in the prairie vole (Microtus ochrogaster). By Henry S. Fitch. Pp. 129-161, 8 figures in text, 6 tables. December 19, 1957. More numbers will appear in volume 10. Transcriber's Notes With the exception of the list of typographical corrections below and minor corrections not noted here, the text presented here is the same as in the original printed version. Tables 1 and 2 were rotated so that the width would be less than the limit of 75 characters wide. In the tables, the title and some column headers were printed in small caps. Those are usually displayed as ALL CAPS; but for ease of reading, they were left as mixed case. The list of UKMNH publications was compiled at the end of the article's text. Typographical Corrections Page(s) Correction ============ ======================================= 129, 130, ii This publication: 4 tables => 6 tables 138 cyle => cycle Text Emphasis _Text_ - Italic