2006年5月,湖南省新宁县热心读者邓家勤先生给我寄来一篇介绍该县石种——“标志石”的文章,文中附带了六张图片。图中的奇石基本都是长方体形的,黑色的石体上带有白色的图案,图案以牛头纹居多,而且非常对称,极像设计师为企业设计的形象标志。在此之后,又一名新宁读者朱戊扬先生给我寄来一篇 In May 2006, Mr. Deng Jiaqin, an enthusiastic reader from Xinning County, Hunan Province, sent me an essay introducing the stone species of the county, “Sign Stone,” with six pictures attached. The figures are basically rectangular cuboid, black stone with a white pattern, the majority of the pattern to the head, and very symmetrical, much like the designer logo for the corporate image design. After that, another new reader, Mr. Ning Wu, sent me an article