J.D. Anderson 1958 journal July 2 Mosquito Lake, 8050ft, 2mi.W. South Peak, Alpine Co., Calif a large log which I had checked for eggs today I found more - One I was between a piece of wood pulling off bottom of log & log proper - jest where eggs are commonly found. Another was seen clinging to bottom of floating log but swam off when light shone on her. Thus a total of 7 & 9 seen in 20 minutes. We walked out to pond #3. Saw 1 salamander - not able to sex it as it escaped. Back to camp at 11:15. Plenty of schinys between 10-11 pm. Water temp in pond #2 = 7.5°C. Hit rocks at 11:40 pm. July 3 Mosquito Lake, 8050 ft., 2mi.W. South Peak, Alpine Co., Calif Up at 6:45 am. After breakfast I worked pond #2 in order to see if 7 & active last night had deposited eggs. Almost every log at NW end of pond #2 had Ambystoma eggs under it - All freshly laid - most undeveloped yet. The eggs which were found lastnite (see above) are now in the 4 cell stage. Collected a batch for description & experiments. Worked other ponds in the area. No eggs as yet in ponds 3 & 4 which were still snow covered on June 25,1958. Collected 1st. F. in Pond #4. Two nice adult Rana muscosa in this pond also. First adult muscosa I have seen outside of Mosquito Lake themselves. Hyla regilla now in full chorus in ponds 1 & 2. They were singing in #1 on 25 June but were absent from #2. Now in #2 eggs of H. regilla abundant in pond #1 but absent as yet from #2. Ambystoma thus is the first amphibian to breed in these ponds.