Passau 1982 April 12 Bariboscho. April 13 Flown to Buenos Aires and checked into Hotel Rocaber. Then to the Museum of Natural History where I delivered some live frogs from Soger Christe to Jose Bollards. Then talked with Crebo and was shown the manual curatorial system. Shinst shells are kept separately, but there is a card file down to genus that records most of the specimens and their location by case and drawer number. April 14 - 16. Worked with mammal collection. Aute around afternoon of April 15. The mammal collection has numerous Berlin specimens from Thomas Loedeltra, including skins of 3 Jastodolphys (without shells). Took photos of them, also photos of marsuosa skulls and jaws. Some of the Berlin specimens are from his family after his death. Many geper specimens, but almost all are long series in alcohol, which I did not examine. They had no Eumongys (but a half-dozen Cedisomya minoris are so labelled), and no Procony? Crebo knew nothing about Abodon mountolensis. April 17. Dinner with Mario and Cecilia Oliveira and Eduardo Orvelli and his girlfriend. They have made a few minor changes in stratigraphy. He had already talked to Dick Soge in Bariboscho and said "C. Heuser of M.Y. has a complete pollen profile of Cueva Trefol including a new 1-meter sample below 9000 B.C. This new section indicates the earliest period to date, with 85% of the trees of the Waldron forest present; also human remains." Eduardo says that they have re-numbered the sequence and that my figure (and table)