X-ray diffraction patterns of sonically disrupted microorganisms. Loyd Y, Quinn ad Donald L. Biggs, 425

Commercial laundering of woven cotton, linen, rayon, and cellulose secondary actetate. Ruth Gerber, J.S. Taylor, and Rachel Edgar. 437

Estimation of corn maturity in Iowa. R.H. Shaw. 457

Carbon dioxide fixing systems in Mycobacterium phlei gown in a chemically defined medium. T. Myoda and C.H. Werkman. 463

Ten new species of Phytocoris from North America. Harry H. Knight. 473

Author and Subject Indices, Vol. 35. 485