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589. Halsted, B. D. Classification and Description of the 

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 20:169-190. 5Mrl879.— (Bot. Gaz. 5:20, 21. F1880.) 



Eif^ht species of Nitella, 1 of Tolypella, 14 species and varieties of 

 Chara described. 



590. Hamlin, F. M. Bermuda Earth. Am. Jour. Mic. 2 : 

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591. Hanks, H. (j. Diatoms and Diatomaceous Earths. 2d 

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 1882. 



A list of 100 diatoms found in tiie Santa Monica Earth. 



592. . A fossil Diatomaceous Earth. — (Am. Mo. Mic. 



Jour. 8:117. Jel887.) 



Remarks before the San Francisco Microscopical Society at the meet- 

 ing of Apr. 13, 1887. 



593. . Diatomaceous Earth. — (Am. Mo. Mic. Jour. 



12:190. Agl891.) 



Specimens of fossil diatoms from Santa Barbara county, California, 

 presented to the San Francisco Microscopical Society June 1, 1891. 



594. Hariot, P. Algues Magellaniques Nouvelles. Jour. 

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Six species new to science figured and described from Orange Harbor 

 and Falkland Isles. 



595. . Algues. Mission scientifique du Cap Horn. 



1882-83. Botanique. 5:1-109. 9 jil. 1883.— (Bull. Soc. Bot. 

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596. . Le Genre Bulbotrichia. Notarisia. 5 : 993-996. 



S0Jel890. 



597. , Quelques Algues du Bresil et du Congo. 



Notarisia. 6:1217-1220. 30Apl891. 



Twenty species collected by Wainio in Brazil. 



598. . Complement a la flore algologique de la Terre 



de Feu. Notarisia. 7 : 1427-1435. 31Jal892. 



599. . Nouvelle contribution a I'etude des Algues de 



la region Magellanique. Jour, de Bot. 9:95-99. lMrl895. 



600. . Algues du Golfe de Californie recueillies par 



M. Diguet. Jour, de Bot. 9: 167-170. 16Ap. and lMyl895. 



Seven species described. 



601. Harkness, H. W. Chlamydococcus pluvialis. — (Am. 

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Specimens sent to San Francisco Microscopical Society and statement 

 made upon its habits compared with C. nivalis. 



