Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . Fig. 76. Navicula didi/ma. Fig. 77. Pinnuhiria major. those who do not care, or do not need, to betroubled with them ; and because the subject is anexpensive one, as well as a difficult one, to illustratesatisfactorily. There is already a handy-book in existence whichwill supply what is necessary in classification andfurnish the names of the species. This is Dr. Grays Handbook* of British Algse, with the Diato-maceee, by Mr. W. Carruthers. Hence there, will be less necessity for us
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . Fig. 76. Navicula didi/ma. Fig. 77. Pinnuhiria major. those who do not care, or do not need, to betroubled with them ; and because the subject is anexpensive one, as well as a difficult one, to illustratesatisfactorily. There is already a handy-book in existence whichwill supply what is necessary in classification andfurnish the names of the species. This is Dr. Grays Handbook* of British Algse, with the Diato-maceee, by Mr. W. Carruthers. Hence there, will be less necessity for us to adhere to astrict systematic order in publication, becauseI it will be easy to refer the genera illustrated totheir place in the system adopted in the hand-book. The species now figured, if not really typical,will serve to illustrate four genera of the groupcalled Naoiculece. The characters of this groupare described as valve with similar ends, and amedian longitudinal line; front view, linear or quad-rangular; frustules free, concatenate, or included ina gelatinous frond. Navicula is a very large genus,
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
