320 BOTANICAL NEWS. 



Mer, ' On the appearance of starch and sugar in leaves' ; Cornu, 

 ' On an epidemic disease of insects produced by a Fungus' ; Bail- 

 Ion, « On the genus Dedca' ; Cornu, ' On the alternate generation 

 of Uredinem' ; Nylander, ' On the algo-Kchen theory' ; G. Dutailly, 

 * On vessels considered as playing, in certain cases, the part of 

 secretary canals' De Lanessan, ' Besearches in the histogeny of 

 secondary axes.' 



Botantcal Nctos. 



The death is recorded, on May 31st, of Mr. A. Thozet, F.L.S., 

 of Eockhampton, Queensland, at the age of fifty-two, well known 

 as one of the most enthusiastic botanists of Australia. Besides the 

 collection of plants for the herbarium, he had brought together in 

 the grounds of his estate, called Muellerville, a very fine collection 

 of tropical and subtropical species, both native and introduced. 

 Mr. Thozet was by birth a Frenchman, but had lived for eighteen 

 or nineteen years in the colony. His friend, Baron von Mueller, 

 dedicated to him an Asclepiadeous genus allied to Hoi/a, discovered 

 by Mr. Thozet near Kockhampton, Thozetia racemosa ; and he is 

 also commemorated by several species of other genera. 



We also notice the death of S. S. Olney, of Providence, Khode 

 Island, U.S.A., who for many years had closely studied the 

 CyperacecB, especially the species of Carex. It is stated that he has 

 left a large (indefinite) sum to Profs. Asa Gray and W. H. Canby, 

 in trust, to be applied to the study, advancement and progress of 

 Botany in the state of Khode Island. We believe that Mr. Olney 

 published nothing upon botany ; but Prof. Gray has preserved his 

 name in a si3ccies of Scirpm, named after him. 



On July 25tli died Prof. Christian Edward Langethal, of Jena, 

 author of several botanico-agricultural works. 



Messrs. Joshua and Holmes propose, if a sufiicient number of 

 subscribers can be found, to issue a series of microscopical slides, 

 illustrating the principal Families, genera and subgenera of 

 Lichens ; and, if the enterprise meet with success, to follow this 

 by a series of siiecimens of Lichens of which no figures have been 

 published. The specimens will be as tyj)ical as can be x)rocured, 

 and will consist of sections of the apothecia, showing all the 

 various parts ; they will be very useful to those commencing the 

 study of cryptogamic botany. For further particulars apx^ly to 

 Mr. Joshua, Cirencester; or Mr. Holmes, 30, Arthur lioad, 

 Holloway, N. 



Dr. Nyman requests us to state that the first part of his 

 " Conspectus Florae Em-opece" can be obtained by botanists direct 

 from the author, Brunkeborg's Torg, 3, Stockholm, at 'Is. (j<L each, 

 or six copies for 12.s. G</. 



