La Science

Brown ink on cream antique laid paper, squared in red chalk, laid down overall on cream antique laid decorated mount of John Barnard (?)

Brown ink, red wash over red chalk on off-white antique laid paper

Red chalk on cream antique laid paper

Brown ink and brown wash over black chalk on buff antique laid paper

Brown ink over black chalk on white antique laid paper

Brown ink and brown wash on cream antique laid paper

Brown ink, incised, on cream antique laid paper inlaid into incised off-white antique laid album page

Red chalk, brown ink, brown wash and graphite on off-white antique laid paper; verso: red chalk, brown ink and brown wash

Brown ink over graphite on cream antique laid paper, laid down overall to off-white wove paper

Brown ink on off-white antique laid paper

Brown ink with traces of black chalk on cream antique laid paper

Brown ink, brown wash, heightened with white gouache on cream antique laid paper stumped overall with black chalk, pricked in part with probable later re-strengthening of highlights in white gouache