摘要：The work of the Exchange was taken over in October very inzformally, and has been carried out according to the plan adopted in 1926 and so well conducted by Miss Biethan for two years. A monthly list has been broadcast and mailed to the membership as furnished by the Secretary. The nine lists, beginning in November and ending June first, with an extra one in April, contained a total of 142 single pages of mimeographing. Estimating that 50 pages consisted of books, reports, and dissertations at 30 items to a page and the remaining 92 pages carried periodical material at a conservative estimate of 300 items to a page, we have a total of about 29,000 items offered during the year.
