LINNEAN SOCIETY OF LONDON. 1 9 



liead of Cystopliora crisfata, ovthe nasal projection of Macrorhinus, 

 the spur and special glands on the hind limbs of mithorhj ncluis 

 and Echidna may be given as tending to show some of the many 

 differences wliich distinguish the males irrespective of their repro- 

 ductive organs ; and although it is more usual to find the male 

 smaller, more brilliant, more active and conspicuous than the 

 female, yet entire groups may present, in certain features, a 

 reversal of this, the more common condition. 



Mr. Herbert Druce then moved the following resolution, 

 Tiz. : — " That the thanks of the Society be given to the President 

 for liis excellent address, and that he be requested to allow it to 

 be printed." This, having been seconded by Mr. Charles Tyler, 

 was carried unanimously. 



The Linneau Gold Medal for the year was then presented to 

 Dr. Edouai'd Bornet, of Paris, being received on his behalf by 

 M. Raymond Lecomte, Secretary to the French Embassy, who 

 made suitable acknowledgment of the honour done to his country- 

 man, and read a letter from Dr. Bornet. 



The President said : — 



In presenting to M. le Docteur Edouard Bornet the Gold Medal 

 of the Society, it is my duty, in accordance with the practice of 

 my predecessor, to refer to the scientific works which have con- 

 ferred distinction on his name. His earliest published botanical 

 papers related to the structure and life-history of fungi and 

 lichens, including researches on Meliola, on Ergot, on Ephebe, 

 and other lichens. But it is mainly through his series of bril- 

 liant researches into the life-histories of Algae that he has become 

 famous. Among the best known of those are the investigations 

 of the nature of the lichen gonidia, which led to the secure estab- 

 lishment of the theory of tlie dual nature of lichens. The part 

 played by M. Bornet in this remarkable investigation (viz. the 

 proof of the algal nature of these gonidia), which first opened the 

 eyes of naturalists to the phenomenon of Symbiosis, entitles him 

 to equal claims as regards the establishment of the theory with 

 Schwendener and De Bary. At the time of these discoveries 

 M. Bornet was no less busy in collaboration with his distin- 

 guished countryman M. Thuret in the elucidation of the life- 

 liistories, especially the fecundation, of the Floridese. It is not 

 too much to say that we owe to MM. Thuret and Bornet the 

 foundations of our knowledge in this department of phycology, 

 and to their example and methods later investigators are indebted 

 for success. In 1878 he edited and published the 'Etudes Phv- 



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