Formation of endospores by aerobic bacilli serves as a model system for answering basic questions related to development and cyto- differentiation in general. An important aspect of sporulation is that different bacilli seem to form spores by g . . .

There has been some uncertainty regarding the subspecific variation, distribution, and resultant taxonomy Dipodomys nitratoides. It was the purpose of this study to critically examine the geographic variation of this species and, on the basis of t . . .

The L-Form of Staphylocoecus aureus is of interest from a clinical point of view since it has been often associated with certain diseases. S- aureus L-Forms have been isolated from recurrent osteomyelitis (Rosner, 1968)., In addition, Kagan (1972) . . .

Faculty and students of the Moss Landing Marine Laboratory, Moss Landing, California, have been conducting population studies of the dorid nudibranchs in the intertidal of the Monterey Peninsula, California, since 1969. Throughout the studies two c . . .

It has been reported by Chew (1965) that all pathways of water exchange are reduced when mammals are subjected to dehydration. With few exceptions, evaporation is the major loss, and usually the greatest absolute conservation of water is realized . . .

When pasture land, is grazed by cattle the composition of the herbaceous vegetation is changed from that of the ungrazed state and the ecology of the pastoral habitat will be variously affected. The object of this investigation was to examine the dist . . .

Taxonomic and general natural history studies have been complemented by physiological and energetic considerations. This additional emphasis is necessary if the functional role that each species plays in the ecosystem is to be determined. To ascer . . .

A population of three-spined sticklebacks Gasterosteus aculeatus L. from the San Joaquin River below Friant Dam near Fresno, California, was found to be infected with the plerocercoid larval stage of a pseudophyllidean cestode, Schistocephalus sol . . .

Chromosomes were analyzed from the mitotic bone marrow of nine mountain pocket gophers (Thomomys monticola J. A. Allen, 1893). All the specimens, collected from three different localities in the'Sierra Nevadas, had a diploid number (2N) of 40. Ani . . .

The structure of intermittent streams has been described by Abell (1956) . Her work was based on the analysis of Dry Creek, Fresno County, California, which she considered a typical intermittent stream. An earlier work (Stehr and Bransen, 1938) ha . . .