摘要: Abstract The standard methods for the preparation of hearts and separation ventricles are given in detail. complete data on two hundred normal dogs' recorded as a control series. was accomplished both by author's method Lewis' method. statistical studies may be interpreted favoring method, but differences relatively slight. Further-more, author offers his mainly step to facilitate more accurate serve check accuracy weighings. In conclusion, it might stated that this preliminary report standardize supply an adequate series hearts.