E.L. Karlstrom 1955 Buffo lorerz Feb. 16 Richmond, Contra Costa Co. scattered grasses, cut stalks, and a tall (4') dry composite. Green grass (sedge?) growth to 20" with up to 10" above water surface. Fair bloom of algae here, mostly covering surface of pond weeds presumptable along bottoms. 2:17 p.m. Pair at surface now 10 feet due south of original position. Single adult also with head ½ exposed 16" SW from pair. Another small adult 2' W of pair. My movement coused one of single individuals to submerge. Grasses, small piece of wood offer support to these tools. Now a second angling pair appears 5 feet from me and 4' N of pair I was observing. I now will watch some of these. First a test of how long they will stay submerged. Single or adult 45 sec. once, then 1½ min. Expelled air from nostrule or it swam downward after being 20 sec. on surface. Pair max. Time 45 seconds but these are disturbed and active. Closed mole swim in unison female, 9 has arms extended forward due to pressure of male clasp, but she does make some breast stroke arm movement. 2:35 p.m. water temp. 14.3° C. 2" below surface. Air temp. 12.5° C. above water surface. Depth at stake 11". Notel made with knife.