Page:Makers of British botany.djvu/113

Plate IX

Plate 18 from Hales's Vegetable Staticks

Fig. 40. Instrument devised by Hales to make prick-
marks on a young shoot of Vine (Fig. 41); the
distribution of stretching after growth is shown in
Fig. 42. The use of a similar instrument for
marking surfaces is shown in Figs. 43 and 44