Tilden: bibliography of American algae. 413 



1472. Anonymous. Examinations of Water Supplies and 

 Rivers: Water Supplies. 23rcl Ann. Rep. Mass. St. Bd. Health. 

 61-252. 1892. 



The algal forms are classlfled under three groups: Diatomaceae, 

 Cyanophyceae and Algae. 



1473. . Examinations of Water Supplies and Rivers. 



23rd Ann. Rep. Mass. St. Bd. Health. 255-336. 1892. 



Algae are listed. 



1474. , Water Supply and Sewerage. Advice to 



Cities and Towns. 24th Ann. Rep. Mass. St. Bd. Health. 

 1-71. 1893. 



Note on Anabaena. 



1475. . Examination of Water Supplies. 25th Ann, 



Rep. Mass. St. Bd. Health. 93-337. 1894. 



The algae found in each locality listed. 



1476. . Examination of Rivers. 25th Ann. Rep. 



Mass. St. Bd. Health. 341-366. 1894. 



Algae listed from the different localities. 



1477. . Additions to the Reported Flora of Nebraska 



made during 1893. Univ. of Neb. Botanical Survey of 

 Nebraska. Conducted by the Botanical Seminar. HI. Report 

 for 1893. 5-20. 18Jel894. Lincoln, Nebraska. 



ADDENDA. 



1478. Ardissoue, F. Le Alghe cosmopolite. Rendiconti 

 del Instito (Reale) Lombardo di scienze e lettere II. 27: Fasc. 

 19. 1894. 



1479. Aruott, G. A. VV. What are Marine Diatoms? Quart. 

 Jour. Mic. Sci. 7:170-178. 1859. 



One of Ehrenherg's species from Oregon alluded to. 



1480. . Bermuda Tripoli. Quart. Jour. Mic. Sci. 



7:254. 1859. 



Notes upon its history. 



. See Hooker, W. J. and Arnott, G. A. W. 



1481. Bailey, J. W. Microscopical Examination of Deep 

 Soundings from the Atlantic Ocean. Quart. Jour. Mic. Sci. 

 3:89-91. 1855. 



1482. Barber, C. A. Nematophycus storriei, nov. sp. Ann. 

 of Bot. Q:^29-^^8. pi. 19, 20. (14Mrl892.) D1892. 



1483. Barker, . Petalonema alatum, Berkeley, from the 



Falls of Niagara, exhibited. — (Quart. Jour. Mic. Sci. N. S- 

 17:561. 1877.) 



Dublin Microscopical Club, Mar. 15, 1877. 



