Dr . Donald Elvin Savage, a paleontologist who tracked the evolution of the earliest anthropoid apes, died Monday at a hospice in Rossmoor, Calif . He was 81 and had recently moved there from his home in nearby Clayton.
12.
Hermann Schaaffhausen considers in a 1853 treatise about the durability and transformation of species " . . . that species were not immortal, that they have just as the life of the individual being a beginning, a time of blooming and of demise, only in larger time intervals, and that the various life forms also vary greatly in life-span . " Schaaffhausen, who also had emphasized the close proximity of various anatomical and physiological characteristics of man and the anthropoid apes, concludes in his summary : " . . . the immutability of species which is considered a law of nature by most researchers, has not yet been proven ".
