Tilden: bibliography of American algae. 419 



1537. Seymour, A. B. Herbarium Indexes for all the 

 Groups of Cryptogams. 27 sheets. Blue prints 8x10. S1892. 

 Cambridge, Mass.— (Bot. Centralb. 53:144. ]893.) 



1538. Sollitt, J. D. On the Measurement of the Striae of 

 Diatoms. Quart. Jour. Mic. Sci. 8:48-51. 1860. 



Criticisms of the observations of W. S. Sullivant and T. G. Wormley. 



1539. Suhr, J. N. Ton. Beitriige Zur Algen-Kunde Flora. 

 19:337-350. 14Jel836.— (Ann. Sci. Nat. II. 7: 171-176. 1837.) 



American localities. 



1540. Wallich, G. C. On the Silicious Organisms found in 

 the Digestive Cavities of the Salpae, and their Relation to the 

 Flint Nodules of the Chalk Formation. Trans. Mic. Soc. N. S. 

 8:36-55. pZ. ^. (14D1859.) 1860. 



Remarks upon the Triceratium semicirculare of Mr. Brightwell 

 obtained from the Bermuda deposit. 



1541. Webber, H. J. On the Antheridia of Lomentaria. 

 Ann. of Bot. 5: 226, 227. /. 2, 3. Apl891. 



A study at Woods Holl, Massachusetts of material collected in Vine- 

 yard Sound. 



1542. Webster, W. H. B. Account of the Natural Produc- 

 tions of Staten Land and Cape Horn. Edinb. Jour. Sci. 1 : 26- 

 31. Jal830.— (Am. Jour. Sci. Arts. 18:188-190. 1830.) 



States that the sea. weeds about Staten Land are very large and con- 

 tain iodine, while those of the Shetland Isles are extremely meagre 

 in amount and variety. 



1543. West, T. Remarks on some Diatomaceae, new or 

 imperfectly described, and a new Desmid. Trans. Mic. Soc. 

 N. S. 8:147-153. pZ. 7. 1860. 



American localities. 



1544. Wolle, F. Turner's "New Desmids of the United 

 States.' —(Bull. Torr. Bot. Club. 13 : 56-60. Apl886.) 



Reviews Mr. Turner's paper in the Journal of the Royal Microscopical 

 Society, 1885. 



