JPM Myers 1974 Journal Estancia Medeland, 35 km S. of Juancho by road, Ruta de Malvina, Pcia de Buenos Aires, Argentina 17 April started raining 0415 and continued until 0930, accumulating 12.5 mm. The storm first announced its presence around 0300 when lightning became very frequent on the western horizon. This was the most electrically active storm that we have had due for months. At 1400 (after morning of preparing skins) Lois, Iris Breital, and I walked from the farmhouse camp out to tower Llanos and back, taking the following route: farmhouse road to the first gate + 150 m beyond, then due N to the fence at the S end of tower Llanos. We returned by following said fence SE to the windmill, then following the dirt-track SSW to the Estancia. (W)rap to shrubbery the outing was not productive - of course lappingings were in most places except for Spartina and the tall thick grass habitats! which surrounds the Spartina stands. 5 Orypholus were by the gate leading into tower Llanos. We found no xerodrome, nor any Gaffrie. Weather remained cool throughout the afternoon, not rising above 18°C cloud cover varied between 20 + 50%. Moderate SE wind. I took photographs of several of the grassland habitats which we traversed, in particular the Llanos (Chenopodium sp. patchily distributed) in another un-roid group (Ordium?), a Trifolium and sparsely distributed thistle), and the interface between Distichlis stands + a taller thicker growth referred to above. It was intending to note that Salicornia continued from the Distichlis into the other. Habitat interfaces, e.g. that just discussed or that between Distichlis and Cynodon dactylon are very sharp. Returning to the Estancia we passed by the Molino pond, a site I had not visited for over a month. It was completely dry, + probably afforded excellent WR habitat for some time. Arroyo Chico, Estancia Medeland @ Pcia de Bs. Aires, Argentina 18 April Though somewhat late in the game, perhaps should note here that the position of the Estancia is 37°26'S and 57°10'W. Temperature this morning at 0630 = 6°C - cold enough to convince me that the austral fall has arrived. Although before dawn the sky appeared to be completely clear, by first light ~0730, patches of clouds were perceptible and by 0800 I estimated a cloud cover of 60% - heavy cumulus raining to the E, and a slight S wind. The arroyo level was obviously higher today - having received an influx from yesterday's rain + risen ~1-2". I began reading the lipocarpoid at 0816, the approximate time at which the sun hit the horizon. Grid totals: White-rump 7,20(27); Hudsonian Godwit 4,0(4); Charadrius fulicarius 5,15(19); Zonibyx maculatus 3,7(10); B.N.S.Filt