The red blood cells he also finds, with other observers, nucleated more frequently in cancer than in any other form of secondary anemia, and subject to a change of composition, and deficient in lecithin and nuclein. He shows the importance of potash, which we shall later find clinically of such great value in cancer, and I cannot do better than quote some of his words: “How vitally important potassium salts are to the red corpuscles is shown by the following: One thousand parts of red corpuscles are found to contain six hundred and eighty-eight parts of water, three hundred and eight parts of organic solids, and eight parts of mineral. Of these eight parts three and one half are of potassium chlorid, two and one half are potassium phosphate, and decimal one potassium sulphate; the remaining 1.9 parts are divided between the iron, sodium, calcium, and magnesium, comprising the rest of the corpuscles. More than three quarters of the total mineral ash of the red corpuscles is, therefore, composed of potassium. This fact is an important one, and the reader is earnestly requested to bear it in mind.” Later we will again see some of the valuable clinical suggestions which arise from his researches. From our study of inoperable and recurrent cancer, and of metastasis and the blood conditions in the disease, we see what a formidable task is before one who would attempt to lessen its morbidity and mortality. We see also how blind all have been who have so long looked to surgery to stay its progress. In my former lectures I collected and quoted statements from many surgeons of prominence in times past, and even some in quite recent times, all expressive of a belief in a constitutional origin of cancer, and many of them looking to a dietary cause. I also gave biochemical laboratory and experimental evidence showing the medical aspects of cancer. I then remarked that it seemed strange that the medical profession and the public had been so slow in accepting and acting on the accumulated evidence which I have tried to put before you in these and the former lectures. The reason for this seems to be that the medical profession, being occupied largely with acute disease and apparently definite and speedy results, became readily discouraged with the unsatisfactory course commonly observed in cancer; as in the case of tuberculosis, until the revival of an interest in the latter in recent years, with the well known beneficial consequences. They, therefore, turned the cancer cases over to the surgeons, in the hope that they could do better. By the brilliant advances in modern surgery along many lines, the laity also have become obsessed with the idea that it has limitless power in many directions, and have yielded to the knife in spite of the rising mortality of late years. The glamour of modern surgery and its often spectacular results have quite blinded the eyes of many to real facts.