Last fall an attempt was made to study the development of the superficial lymphatics of the chick by injections with India ink. In chicks of seven days and over it was very easy to study the character and extent of the lymphatics by this method, but in younger embryos I found it increasingly difficult to obtain satisfactory lymphatic injections, since in almost every case the superficial blood capillaries were injected at the same time. However, it was occasionally possible to inject an

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... r plexus over the pelvis, and from it a deeper plexus connected with the