Additional Notes. 507 



plants, which are executed with much delicacy, considering 

 the period at which he hvcd. — Barton'^ Botany, 



Christopher Knaut. p. 130. 



Christopher Knaut's hotanical system is represented 

 in the above page as pubhshed about the same time with that 

 of Christian Knaut. This is a mistake. His work, en- 

 tided Enumeratio Flantarum circa Ilalam Sai^orum sponte 

 jyrovenientium, was pubhshed at Leipsic in 16S7. 



Pontedera'6^ Method. 



In 1720, the same year in which Magnol, of France, 

 pubhshed his system, there was another offered to the work! 

 by Julius Pontedera, a nobleman of Pisa. He at- 

 tempted to combine the systems of Tournefort and Ri- 



VINUS. 



Linn.^us'5 Methodus Calycina. 



Besides his sexual system, the great Swedish naturalist 

 founded a method of arrangement on the form and other cir- 

 cumstances of the Calyx. To this method, which he pub- 

 hshed in the year 1737, he gave the name of Methodus Ca- 

 lycina. In this system the vegetable kingdom is divided into 

 eighteen classes. 



Ludwig'5 Method. 



Christian Gottlieb Ludwig, a native of Silesia, and 

 a professor at Leipsic, published a new method in 1737, in 

 which he divided vegetables into twenty classes, taking their 

 distinctive characters from the flower, Ludwig was the au- 

 thor of several valuable works, of which his Institutiones 

 Historico-Physicce Begni Vegetabilis^ &c. printed at Leipsic 

 in 1757, is the principal one. 



Method of Sauvages. 



In 1751 the celebrated Nosologist, Francis Boissier 

 Sauvages, of Montpellier, published his Methodus FoUg-^ 



