400 APPENDIX 



124. Sachs.— See No. 35 this list. 



125. Strasburger. — See No. 15 this list. 



SPIEOGTEA 



126. Arthur, Barnes, and Coulter. — See No. 112 this list. 



127. Bower and Vines.— See No. 3 this list. 



128. Campbell.— See No. 30 this list. 



129. Cooke. — " Introduction to Fresh-water Algae," in " Interna- 



tional Scientific Series," London, 1890. 

 180. Davis.— See No. 51 this list. 



131. Goebel.— See No. 31 this list. 



132. Howes. — See No. 9 this list. 



133. Huxley and Martin. — See No. 10 this list. 



184. Parker.— See No. 44 this list. 



185. Sachs.— See No. 34 this list. 

 136. Strasburger. — See No. 15 this list. 



187. WoUe.—" Fresh-water Algae of the United States," Beth- 

 lehem, Pa., 1887. 



SPONGES 



138. Brooks.— See No. 48 this list. 



139. Bumpus. — See No. 49 this list. 



140. Claus and Sedgwick. — See No. 18 this list, vol. i. 



141. Griffiths.— See No. 53 this list. 



142. Huxley. — See No. 21 this list. 



143. Hyatt. — " Commercial and other Sponges," in " Guides for 



Science Teaching," No. Ill, Boston, 1883. 



144. Lang.— See No. 22 this list. 



145. Sollas. — Article "Sponges," in "Enoyclopfedia Britannica," 



Ninth edition. Eepublished in " Zoological Articles." 

 See No. 42 this list. 



146. "Standard Natural History." — See No. 26 this list, vol. i. 



HTDEA 



147. Claus and Sedgwick. — See No. 18 this list, vol. i. 



148. Davis. — See No. 51 this list. 



149. Gegenbaur. — See No. 19 this list. 



