J.P. Myers 1974 Journal Argentina Arroyo Chico, Estancia Widdeland, 35 Km S. of Juan de la Cruz by road, Pto. de Madariaga, Pcia. de Bs. Aires, the 1.5 hr. cunn period and as a result retract 24 cm along the shore, but this did not cause any measurable change by the stability measure. Nor did an afternoon 3 cm water level increase (increasing 5 wind blowing upstream), nor a plus 1.5 cm decline when the wind died (in fact it returned it to the morning's level. Grid 17B, Tower, (1,18) region, Estancia Widdeland, 35 Km S. of Juan de la Cruz, Pto. de Madariaga, Pcia. de Bs. Aires 20 November on Tower at 0630 after an early morning light rain and wind. By 0650, however, weather was clearing and it was obvious that the storm never was to develop - clouds moving quickly off toward the NE. By 0730 sky cleared to 80% cloud cover. I began sampling 17B at 0730. At 0800 Lois began a simultaneous monitoring of sites of aggression on 17B. with me spotting sites between sample times. This slu continued until 1100. I sampled every 15 minutes until 1230, and then we left the tower, See Tryggestes for accent or specifics of events during the morning. Also 17B data book and Grid 16-17 data book for aggression sites. Density of buffalo wood down from our last observation period (11/12-24), from 10.8/sample to 8.5/sample. There was a marked increase in the number and consistency of space-specific birds during today's observation period as compared to that of 11/12-24. And, as one would hope, the [illegible] index showed a much more even dispersion pattern, staying below 1.0 for almost all samples except during spooked and the period immediately following spooked. I was able to get an excellent series of spooked points, including a succession of Emini sample following one spooking (at 1030) from an [illegible] of 6.8 → 1.69 in 6 minutes. Gulew maintained the even dispersion which has been their characteristic since we began these calculations. It appears that there are an equivalent # of turtled birds on 17B (mean of 5.5 birds/sample). Also, the 16a golden for which we have a number of days of following data showing no little change in boundaries was true again this morning, although we did not take any more following data. Grid 15, (0,18) region, Estancia Widdeland, Pto. de Madariaga, Pcia. de Bs. Aires, Argentina 21 November 0635 reached the large scale buffy grid, #15, and began sample immediately.