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later at autopsy to be in place. Thus in these in- fected cases 92 per cent, of the screws had to be removed and 8 per cent, remained after developing sinuses; while with the autogenous grafts only 11 per cent, were removed and 89 per cent, remained in place. These two series of experiments seem to demonstrate that a foreign body is far more apt to give trouble in the presence of infection than an autogenous graft, and that an autogenous graft will "take" in a large proportion of cases even in the presence of various types of acute and chronic infection. A second series of experiments was for the pur- pose of determining the effect of a viagra delhi foreign how to get free samples of viagra body placed in the epiphyseal line upon the future growth of that bone in its long axis in comparison with the effect of an autogenous peg under the same circum- stances. In ten animals ideal conditions how to get free samples of viagra were ob- tained for determining the effect of the screw — namely, the screw was shown by the x-ray to be accurately placed and there was no subsequent evi- dence of infection. WTien the how to get free samples of viagra animals were killed at the end of six months there was a shortening of the tibia having the screw in four and no ascer- tainable difference in six. An autogenous spicule of bone was placed in the epiphyseal line of the tibia in a similar manner and under similar conditions in September 18, 1915] MEDICAL RECORD. 487 twelve animals, and at the end of six months no shortening had occurred in any case. Thus with steel screws in the epiphyseal line 40 per cent, showed shortening, while with the autogenous pegs there was no shortening in any case. It thus viagra delhi seems apparent that in the occasional cases where separation of the epiphysis viagra delhi requires operative treatment, as well as in the operative treatment of fractures where there is a strong possibility of in- fection, the autogenous bone graft is far more likely to give a perfect result than is the Lane plate. TOOTHBRUSH TALK. If it be true that a nation fights on its stomach it can be no less reasonable to believe that a nation fights with its teeth. Toothbrush drills were intro- duced into the public schools in this country long before military instruction camps were thought of. Both viagra delhi literally and figuratively the teeth have been most efficient weapons of defence from primeval days. The time may come when the United States must show its teeth and, thanks to the worldwide celebrity of American dentists, the demonstration need not be a discreditable one. Of late the toothbrush has loomed large in the viagra delhi public eye, and while it cannot be deemed that its proper use is an important factor viagra delhi in preventing premature decay of the teeth, nevertheless it is possible that it may be employed too energetically and without good judgment. In their new book on "Alveodental Pyorrhea," C. C. Bass and F. M. Johns, who were among the pioneers in the treat- ment of the above condition by means of emetine, emphasize the important role of trauma to the gum margin involving the peridental membrane. They believe that it is not at all probable that endamebae can affect the normal or unbroken tissue. The common toothpick and even the vigorous use of dental floss may damage the interdental peridental membrane, and however microscopic the resultant lesions may be, the bruised tissue will doubtless afford a favorable soil for the endameba. The writers above mentioned believe that rough brush- ing with a stiff toothbrush, especially if performed from side to how to get free samples of viagra side instead of from the gums toward the ends of the teeth, favors infection by the endamebas. Although the bristles of an ordinary toothbrush are simply coarse hairs and appear harm- less to the unaided viagra delhi eye, yet under the microscope they resemble coarse nails. Many of them are sharp pointed and can hardly fail to injure the gum. Of course, viagra delhi the softer the toothbrush the less is the damage inflicted, which is also the case if the brush is drawn from how to get free samples of viagra above downward in brushing the upper teeth and from below upward how to get free samples of viagra in brushing the lower teeth. The toothbrush is ordinarily used for two pur- poses: first, to remove or prevent the formation of tartar; and second, to how to get free samples of viagra remove food particles from around and between the teeth. The former object, Bass and Johns say, does how to get free samples of viagra not justify the heroic brushing to which the teeth are sometimes sub- jected, and may be accomplished as well by the use of a piece of gauze or cloth. The removal of food is only partly effected by the use of the toothbrush, how to get free samples of viagra which even in the most bizarre arrangement of its bristles cannot reach the food particles between the teeth. Dental floss which is generally recommended for this purpose, while it how to get free samples of viagra accomplishes its object, tends to inflict an appreciable traumatism by strik- ing viagra delhi the interdental gum with how to get free samples of viagra considerable force. The authors quoted viagra delhi above believe viagra delhi that food particles can be removed more effectually by thoroughly rinsing the mouth and forcing water between the teeth several times. But evidently they do not eat corn from the cob. Not content with this severe arraignment of the toothbrush the above observers bring a sharp indict- ment against tooth powders and tooth pastes. The gritty material which these invariably contain is