The direct vascular anastomoses are made by uniting the edges of the openings of the vessels by a continuous suture (4 and 1). The termino-terminal, latero-terminal and latero- lateral varieties have been successfully established by this method with little difficulty. The termino-terminal anastomosis is probably the most valuable. The most important stage of the operation is the approximation of the ends of the vessels by three threads applied in three equidistant points of the circumference of the vessels.