ANNOUNCEMENTS

"PALAEOGEOGRAPHY~ PALAEOCLIMATOLOGY, PALAEOECOLOGY" TO BE PUBLISHED IN

8 ISSUES PER YEAR

Due to the enormous increase (in spite of an evergrowing rate of refusal) in the number of manuscripts available for publication in Palaeogeography, Palaeoclimatology, Palaeoecology it has been decided to increase the number of issues per year to eight (two volumes of 4 issues each). This step has been taken to prevent delay in publication.

In the first three years of its life Palaeogeography, Palaeoclimatology, Palaeoecology has steadily increased in size (1965:338 pp., 1966:386 pp.; 1967:472 pp.), and this, which clearly justifies its existence, was also an important factor in the decision to increase the number of issues per year.

We hope thereby to be rendering a service to our readers and authors.

THE I.U.G.S. GEOLOGICAL NEWSLETTER

The International Union of Geological Sciences publishes circular letters containing in- formation on I.U.G.S. activities, future international meetings, reports on recent meetings, abstracts of papers submitted to symposia, and progress reports on international research projects, reports submitted by I.U.G.S. commissions, committees and affiliated organizations. The price is U.S. $ 5.00 per annum (about 4 issues); U.S. $1.50 per single copy. Subscriptions or demands for single copies (18 up to now) can be sent to Prof. Dr. W. P. van Leckwijk, Secretary General I.U.G.S., Mechelse Steenweg 206, Antwerp (Belgium). Payment should be made by bank or postal order to Prof. Dr. R. Triimpy, Treasurer 1.U.G.S., Schweizerische Kreditanstalt, Filiale Rigiplatz, Universit~itsstrasse 102, Ziirich 6 (Switzerland).

Palaeogeography, Palaeoclimatol., Palaeoecol., 3 (1967) 463