[1] In the 1840s, British botanist Anna Atkins recognized that traditional hand-drawn illustrations were inadequate for capturing the intricate, hair-like structures of British algae. [2] To address this limitation, she turned to the newly invented cyanotype process, which used light-sensitive chemicals to produce precise blue-and-white silhouettes of botanical specimens. [3] Atkins painstakingly placed wet algae directly onto treated paper and exposed it to sunlight, producing images that served as direct physical imprints of the plants. [4] Her resulting self-published work, British Algae: Cyanotype Impressions, is widely considered the first book illustrated with photographs.
The writer wants to add a sentence after Sentence 3 that provides the most specific, concrete visual detail demonstrating the precise botanical features captured by Atkins's cyanotypes. Which choice best accomplishes this goal?
- The prints clearly revealed the delicate, threadlike filaments and translucent cell walls of species like Dictyota dichotoma, details that manual sketches often obscured.Answer
- BThe process was highly efficient. Because she could produce dozens of these vibrant blue prints in a single afternoon when the sunlight was at its peak.
- CAtkins’s work was groundbreaking; her collection eventually grew to include thousands of specimens representing hundreds of distinct British species.
- DRevealing the intricate patterns of the marine flora, the treated paper was exposed to light by Atkins, which created a stunning silhouette.