. Fig. 121. A photograph of the head of a fowl shonnng epithelioma on the coinh and in front of the eye {after Ward). to it from the Southern States and Ward has described it in California. Sedgwick reports that it is one of the greatest obstacles to chicken raising in Hawaii. ^ 429, Etiology. The cause of this disease is not satis- factorilv settled. Rivolta and Silvestri considered coccidia to

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Keywords: ., bookcentury1900, bookcollectionamer, bookdecade1900, bookyear1908