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No description of accessory parotid lymph nodes in the ox was found in the 25 references consulted. Accessory parotid lymph nodes in two fresh ox heads were found. One of the lymph nodes was located in the temporal fossa on the cornual A., between the artery and the zygomatico- temporal N. and the other one on the route of the lacrimal br. (A) and external ophthalmic V., ventral to the zygomatico-temporal N. The lymph nodes were atypical. The supportive tissue was primarily smooth muscle, no subcapsular or cortical sinuses were seen; no medullary region was evident and the lymphatic tissue was diffuse with no evidence of nodule formation. Two hemal nodes were found in the second and a third fresh ox head obtained from the same source. Both were located on the route of the lacrimal br. of the cornual A. The largest hemal node was normal histologically, with blood-filled sinuses and prominent, active lymphatic nodules. The small hemal node was somewhat atypical in that no trabeculae penetrated the parenchyma and the cortical lymphatic tissue was diffuse with no nodule formation.

A new analytical immunochemical method using gel film copies obtained by means of multilayer gel plates is described. The method is suitable for any variant of immunochemical gel technique. Perfect identity of the copies as well as some advantages are exemplified. In comparison with the already known monolayer gel plate method, the multilayer plate is more advantageous for the study of the dynamics of the antigen-antibody reaction, for the discovery of the nature of some unknown biological products available in very low quantities and for the discovery of the nature of some unknown biological products available in very low quantities and for the economy of certain costly reagents. Moreover, its high reproductibility recommends it as a reference method for the control of quality, especially of the precision and accuracy of the monolayer immunofiltration techniques.

Congenital anury (taillessness) was observed in 2 Cairn Terriers. Fecal staining of the hind limbs was evident in both dogs. A mating of the affected dogs produced a litter of 2 apparently normal pups. The small litter size may have been attributable to lethal gene combinations similar to those described in mice. The radiographic appearance of the caudal and sacral vertebrae was atypical in both tailless dogs. Results of myelography and electrodiagnostic testing of anal sphincter function were normal in one of the dogs. One of the tailless dogs was euthanatized and was found to lack specific muscles and muscle parts responsible for normal defecation, which resulted in fecal staining of the hind limbs. Pedigree analysis revealed the tailless dogs to be closely related and slightly inbred, suggesting a hereditary etiologic factor for anury.