Tilden: BIBLIOGRAPHY OF AMERICAN ALGAE. 309 



157. Bessey, C. E. Sexuality in Zygnemaceae. Am. Nat. 

 18:421, 422. Apl884.—( Science 6:224,225. 11S1885. )— ( Jour. 

 Roy. Mic. Soc. II. 5: 1038, 1039. D1885.)— (Proc. Am. Ass. Adv. 

 Sci. 34:291. 1886.) 



A brief abstract from Nature with additional notes upon the subject. 



158. . Preliminary lists of the Protophytes, Zygo- 



phytes, Oophytes, Carpophytes and Bryophytes of the Ames 

 Flora. Bull. Bot. Dept. Iowa Ag. Coll. 133-150. 1884.— (Bot. 

 Gaz. 10:249. Mrl885.) 



159. . Botany in Kansas.— (Am. Nat. 10:73. Jal885.) 



A dozen algae identified by F. Wolle. 



160. . Botany at Salem.— (Am. Nat. 19:605, 606. 



Jel885.) 



An extract from annual report of work of Peabody Academy of 

 Science. Algae were given especial attention. 



161. . Attempted hybridization between Pond-scums 



of different genera. Am. Nat. 19:800-802. Agl885. 



162. . Botanical work in Minnesota. Am. Nat. 



22:66,67. Jal888. 



Forty-three species of desmids and diatoms are listed. 



163. . Pediastrum and Polyedrium. Am. Nat. 22: 



1026. N1888. 



164. . Algae growing on animals. Am. Nat. 22:1028. 



N1888. 



Three species of algae on hairs of sloths. 



165. . Supplementary list of recently reported spe- 

 cies. Cont. Bot. Dept. Univ. Nebraska N. S. 3:45-53. 1892. 



Fifty-six species of algae listed. 



166. . The Sargasso Sea. By Dr. O. Kriimmel. 



(Am. Nat. 26: 251,252. Mrl892.) 



167. Bicknel, E. An exhibition of Diatoms thrown up by the 

 sea at Marblehead, Massachusetts. Proc. Am. Ass. Adv. Sci. 

 19:384. 1871.— (Am. Nat. 4:573. N1870.)-(Mo. Mic. Jour. 

 5:34. lJal871.) 



Report given at the 19th meeting of the A. A. A. H. 



168. Bigelow, R. P. On the structure of the frond in 

 Champia parvula Harv. Proc. Am. Acad. Arts. Sci. N. S. 15: 

 W. S. 23:111-121. 1 pL If. (16Jel887.) 1888.— (Proc. Am. 

 Ass. Adv. Sci. 36:274,275. (Agl887.)1888.)— (Jour. Roy. Mic. 

 Soc. 1888:623. Agl888. 1889:418. Jel889.)— (Bot. Centralb. 

 34:99,100. 1888.) 



1G9. Biscoe, J. D. Amphipleura pellucida by moonlight. 

 — (Am. Nat.7:55. Jal873.) 



