Anna Atkins Cyanotype

In 1843 the botanist Anna Atkins began issuing "Photographs of British Algae: Cyanotype Impressions" — the first book illustrated with photographs. She laid dried seaweed onto paper sensitized with Herschel's iron-salt chemistry; where the specimen blocked the sun, the page stayed white, and everywhere else the paper oxidized to deep Prussian blue.

This system rebuilds that contact-print logic. The ground is always the saturated ferrous blue of exposed cyanotype paper; the highlight is the bare white silhouette of a specimen. Old-style serif book faces and generous botanical-plate margins carry the scientific gravity of a Victorian folio.

1843 年，植物学家安娜·阿特金斯开始刊行《英国藻类照片：蓝晒法印记》——人类第一本以照片为 插图的书。她借用赫歇尔发明的铁盐感光化学，把晒干的海藻直接铺在涂过药水的纸上：阳光照到的 地方氧化成深普鲁士蓝，被标本遮住的地方则留下纯白的轮廓。

这套设计系统重建了这种接触印相的逻辑。底色永远是曝光后蓝晒纸那种饱和的铁锈蓝，高光则是 标本留白的剪影。版面用老式衬线书体与维多利亚植物图谱的宽阔留白，承载十九世纪科学对开本的 庄重质地——绝不出现奶白或纯白底，蓝就是地。