古代碑帖书画流传甚多,时有真假难分之作,杨守敬辨伪能自辟蹊径,总结出许多鉴识良方。题跋中就写到了印鉴法、墨鉴法、法鉴法、材鉴法等方法。如《仇十洲〈升仙图〉跋》:仇实父《升仙图》,卷尾有『项墨林』印记,皆真迹也。项元汴,字子京,号墨林,是明代著名鉴赏家、 Ancient calligraphy and painting spread a lot, when there are true and false, Yang Shoujing discrimination can self-invented, summed up many knowledgeable recipe. Postscript wrote in the seal method, Kam Kam method, law Kam law, material Kam method. Such as “Qiu Shizu Postscript”: hatred of his father “ascended the immortal map”, volume tail “Xiang Mo Lin” imprint, all authentic trace also. Xiang Yuan Zhen, the word Beijing, No. Mo Lin, is a famous connoisseur of Ming Dynasty,