Agnes Block collected more than four hundred watercolours of flowers, plants, birds, and insects. Of this collection, one volume survives intact in the collection of the Rijksmuseum, in Amsterdam. The title page of this volume informs us that it contains “Plusieurs especes (sic) de Fleurs dessinees d’apres (sic) le Naturel”—many species of flowers drawn after nature (fig. 25). Block’s collection of watercolours was of enormous significance to her, as evidenced by its reference in her portraits. Arguably, it was the most important collection of watercolours commissioned by a liefhebber for the purposes of memorializing a garden.

This chapter examines Block’s collection of watercolours, with a special emphasis on the Bloemenboek. Since the collection has been dispersed and only limited documentation about it and its constitution is available, it may be more accurate to describe this examination as being about a portion of Block’s collection of watercolours. This qualification, however, is not a limitation in this case. The purpose of this chapter is not to try and reconstruct Block’s collection, nor to attempt the attribution of unsigned works. Rather, the objective is to explore the ways in which what we know about the collection can allow us to deepen our understanding of Agnes Block’s devotion to her practice as an amateur botanist and to situate her self-fashioning at the intersection of art and science. Incidentally, this chapter also sets the stage for the examination of Block’s connections with the many artists who produced the watercolours, which are the subject of chapter 7.