La Science

Black chalk, brown ink, brown wash and white and pink gouache on antique laid paper prepared with orange-brown wash, laid down overall to cream wove antique laid paper

Brown ink over black chalk on cream antique laid paper

Brown ink on cream antique laid paper

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

Black ink and brown wash (?) on buff antique laid paper

Brown ink, brown wash, over graphite (?) on cream antique laid paper

Brown ink over red chalk on tan antique laid paper

Black and white chalk with black and and gray wash on buff antique laid paper; verso: black chalk

Brown ink, brown wash, and black chalk, with incidental black and red chalk around edges, incised, on off-white antique laid paper, with a framing line in brown ink

Red chalk on cream antique laid paper

Brown ink and brown wash over graphite, heightened with white gouache, on faded blue antique laid paper, laid down overall to modern laid decorated mount

Brown ink and brown wash over black chalk on off-white antique laid paper, pricked for transfer