It was not till nearly forty years after Morison's death, not until Bobart too was dead, that a full statement of Morison's method was published. In 1720 there appeared at Oxford a small tract of but twelve pages, the _Historiae Naturalis Sciagraphia_, containing an account of a complete system of classification, which agrees in all essentials, so far as herbaceous plants are concerned with that adopted by Morison and by Bobart in their respective volumes of the _Historia_: and, as regards trees and shrubs, with that in the MS. volume by Bobart which has been already mentioned. The tract is anonymous, but the matter that it contains is Bobart's work, whether it was written by himself or by some one who had access to his papers. This classification may be accepted as being essentially that of Morison, though somewhat modified by Bobart, who had undoubtedly been influenced by Ray's systematic writings which had appeared meanwhile. It is of such interest that it may be reproduced here, somewhat compressed, with an indication of the modern equivalents of the groups. I. ARBORES. Coniferae semper virentes: most coniferous genera. " foliis deciduis: _Larix_, _Alnus_, _Betula_. Glandiferae: _Quercus_. Nuciferae: _Juglans_, _Fagus_, _Corylus_, _Laurus_, &c. Pruniferae: _Prunus_, _Olea_, &c. Pomiferae: _Pyrus_, _Citrus_, _Punica_, _Ficus_, &c. Bacciferae: _Taxus_, _Juniperus_, _Morus_, _Arbutus_, _Sorbus_, &c. Siliquosae: _Cercis_, and other leguminous trees. Fructu membranaceo: _Acer_, _Carpinus_, _Tilia_, _Fraxinus_, Ulmus. Lanigerae non Juliferae: _Platanus_, _Gossypium_. Juliferae et Lanigerae: _Populus_, _Salix_. Sui generis Arbor: _Palma_. II. FRUTICES. Nuciferi: _Staphylea_. Pruniferi: _Cornus_. Bacciferi, foliis deciduis: _Viburnum_, _Rhus_, _Rosa_, _Ribes_, &c. " semper virentes: _Ruscus_, _Phillyrea_, _Myrtus_, _Buxus_, &c. Leguminosi: _Genista_, _Cytisus_, _Colutea_. Binis Loculamentis: _Justicia_, _Syringa_. Capsulis tetragonis: _Philadelphus_, _Tetragonia_. " pentagonis: _Cistus_. Multicapsulares: _Spiraea_, _Erica_. Lanigeri: _Salix_, _Tamarix_, _Nerium_. III. SUFFRUTICES. Scandentes capreolis: _Vitis_, _Bignonia_, _Smilax_. " viticulis: _Lonicera_, _Jasminum_, _Solanum_, &c. " radiculis: _Hedera_. IV. HERBAE. Sectio i. =Scandentes=: Bacciferae: _Bryonia_, _Tamus_, &c. Pomiferae: most Cucurbitaceae. Campanulatae: Convolvulaceae. Sectio ii. =Leguminosae, Papilionaceae siliquis bivalvibus=: Leguminous herbs. Sectio iii. =Siliquosae Tetrapetalae Bicapsulares=: Cruciferae (with _Veronica_ and _Polygala_). hisce adjiciuntur quaedam: _Chelidonium_, _Fumaria_, _Epilobium_, &c.