«Un'assenza di alcuni giorni nii ha fatto ritardare sin qui il do- 

 vern di ringraziarla del gentiie invio delia 2.' parte della interes- 

 saniisslma Silloge delle Bacillariee >. 



F. Castracane 

 [Lettera 4 Aprile 1892]. 



-^••-«-•-^ 



» Gef-tatten Sie mir, Ihnen meine Freude und Bewunderung iiber 

 Ilir kurzlich erschienenes so verdienstvolles Werk, dem Sylloge Al- 

 garum auszusprechen, welches einem allgemeinen Bediirfniss abhilftt. 



T. Reinbold 

 [Lett. 4 Aprile 1890]. 



K.Vous t^moignant ma plus parfaite reconnaissance pour l'envoi 

 du premier Volume du aSylloge», cet oeuvre enorme de si haute 

 importance et queje voudrais bien, de raeme que tous les algologues, 

 voir achev'' par vous eu peu de temps et avec le meme SUCCes, avec 

 lequel je vous ai vu traiter les Chlorophycees ». 



L. Reiniiard 

 [Lett. 1 Gennaio 1890]. 



Vol. I Chlorophycea; Sectio 1-2. — The President (of the Royal 

 Microscopical Society [of London) called attention to the voluraes 

 prosonted by Dr. J. B. de Toni as being tho commencement of a 

 most important work upon the marine Algaj. The portion now be- 

 fore them contained one section only - the green Seaweeds- every 

 known species of which was fully described. The other two great 

 sections, the red and the brown varieties, would be afterwards dealt 

 with. And the whole, when completed, would form the most va- 

 luable work of reference on the subject yet contemplated. 



[JOURN. R. MlCROSCOPICAL SOCIETY 

 1891, Part 4, pag. 554]. 



