Lehner, P. 1965 Jan. 16 did progress report for first half of Jan; at 2230 we counted birds on the guywires and got the following totals: Red-footed Boobies 1434, and Great Frigatebirds 280; there are now 15 Gray-backed Tern eggs on the old pier. Jan. 17 Grey-back eggs: 1 new and 2 destroyed for total of 1 on the islet, and 3 new and 5 destroyed for total of 13 on pier; there is one Great Frigatebird egg on the islet; today I finished the progress report and got it in the mail; we tested both the moisture meter and telethermometer today and found that they are affected to an unpredictable degree by ground current created by the LORAN tower; using a Galvanometer the ground current read about 20µ Amps, enough to charge the gypsum block like a capacitor such that no resistance is recorded at all - in fact it records a minus resistance; we checked the tele-thermometer with a regular mercurial thermometer and found that it read higher - a result, probably, of the current upon the thermocouple; Binion and Norm tried dragging a small sheet of cloth for ticks, but did not pick any up.