/ Sciadophytorum systematîs lineamenta 



exposuit 

 В. Koso-JPoljanskyf 



Soc. Caesar. Nat. Curios. Mosqu. aliarumque unionum literarium sodalis. 



Praemonenda. 



Concerning ourselves we speak not, 

 but as touching the matter which we 

 have in hand, this we ask; that men deem 

 it not to be the setting up of an opinion, 

 but the performing of a work; that being 

 well disposed to what shall advantage 

 themselves and putting of factions and 

 prejudices t)\ej take common counsel 

 with us to the end that, being by these 

 our aids and appliences freed and de- 

 fended from wanderings and impediments, 

 they may lend their hands also to the 

 labours which remain to be performed. 

 Bacon. Instaur. Magn., praef. 



Quae huic opusculo praefanda veniunt, „antequam ad sententiam 

 redeo de me pauca dicam" *. Plures jam fuere anni per quos Um- 

 bellatarum, Adans. familiae fastidiosae plantis cognosceiidis 

 operam dedi magnique voluminis librum molior quod omnium sciado- 

 phytorum generum singularumque specierum historiam criticam 

 adjunctis iconibus analyticis complectetur. Mentem animumque talem 

 ad rem appellens familiam solicite examinans cunctari nolo. Per 

 assiduam investigationem cognovi non tantum et specierum in gene- 



1 Cicero in Catil. II. 



