Better beach for walking than yesterday, but shells scarce. Very few Donax or Platyodon. About 2 miles up there are boulders harboring many marine snails. Found one live Pomaulax undosa, very large. Lunched opposite San Mateo rocks at 12:30, starting on at 1:05. The tide forced us up the beach to the steep, soft sand, and as there were no shells. We finally took to the railroad track and wagon road, which parallel the shore along the flat which intervenes between the sea cliff and the shore. This flat extends from San Onofre to Sera (sic), running from a few rods to several hundred yards in width. Reached Serra (San Juan) at 4 p.m. and went up the valley nearly to Capistrano (which is 3 miles from Serra) where we stopped for the night at the ranch of Mrs. Barnes, This is a beautiful valley, devoted chiefly to walnut growing and appears quite productive. It has been a hot, bright day, but with a fair sea breeze along the shore.
