Among the more recent findings of science in regard to the effects of alcohol are the action of this drug upon the leucocytes or "guardian cells" of the body. Leucocytes are defined to be "minute, nucleated, colorless masses of protoplasm, capable of ameboid movements, found swimming freely in blood and lymph, in the reticulum of lymphatic glands, and in bone-marrow and other connective tissue." The white corpuscles of the blood are leucocytes. "The work of these cells is to prey upon and take into their substance bacteria and other micro-organisms within the blood and tissues. This destruction of bacteria, and other noxious organisms, has the biological name of phagocytosis." Dr. Alonzo Brown in _Physician and Surgeon_ says of phagocytosis:-- "Recently a brilliant theory has been projected into the histological world. It is the principle of phagocytosis. The beauty of it is so great that we are attracted by it, and its reasonings have riveted general attention. It is said that certain cells have the power to absorb and so destroy other cells. This is phagocytosis. It is said that 'the cells which are known to possess phagocytocic properties are the leucocytes, mucous corpuscles, connective tissue cells, endothelia of blood vessels and lymphatic vessels, alveolar eypithelium of the lungs, and the cells of the spleen, bone, marrow and lymphatic glands.' (Senn). This is a very significant array of colloid matter; and it has been repeatedly affirmed by the highest authorities that alcohol is poisonous to the colloid element. "Now, among the most important of the phagocytes just enumerated are the leucocytes. They embrace and enfold the pathogenic germs with which they come in contact by what is known as an ameboid force. They enclose, disintegrate and absorb the enemy. It is well known that the moment the leucocytes are submitted to an alcoholic solution, their ameboid movements cease, and their function is arrested. It is plain that their phagocytocic power is immediately destroyed. It is possible, also, that the fixed tissue-cells are likewise impaired or killed by alcoholic imbibition. How deleterious, and even deadly, must the internal administration of alcoholic liquors then be in the treatment of diphtheria, and of other diseases having a germinal origin? It therefore follows, to my mind, that all the diseases which are the result of germinal infection, are most badly treated when alcohol is used in their therapy.