75 



23- Ljungquist J. E. — Bidrag till aegagropilafragan. — Arkiv f. 

 Botanik XIV, n. 4, 34 pp., 3 Taf., 9 Textfig. 



24. Mola P. — Flora delle acque sarde. Contributo delle piante 



idrofite e igrofite della Sardegna. — Atti R. Accad. delle se. 

 di Torino voi. LIV, 19 18- 19 (19 19) pag. 236-260. 



25. Moreau Fernand et M.™'' — La Biomorphogénèse chez les Li- 



chens. — S. n, t. 



26. Moreau F. — Sur le phénomènes de métachromasie. — Bull. 



Soe. Botan. de France T. 63, pag. 75-79. 



27. Naumann E. — Vegetationsfargningar i aldre Tider. III. En 



planktonfàrgning i sjòn Barken, Baiarne, ar 1697. — Bota- 

 niska Notiser 1919, Hàftet 2, pag. 65-82. 



28. Pethybridge G. H. — The Cultivation of Seaweed in Ireland. — 

 Journ. Departm. Agric. and Techn. Ind. Ireland XV, pag. 



546-549- 



29. Pujiula J. — ■ Notas biológicas. — Boletin de la Sociedad ibè- 



rica de Ciencias Naturales T. XVIII, n. 2-5, 1919, pag. 33- 

 40, Fig. 



30. Rabanus A. — Beitrage zur Kenntnis der Periodicitat und 



der geographischen Verbreitung der Algen Badens. — Ber. 

 Natiirf. Gesellsch. Freiburg i. Br. XXI, pag. 1-158. 



31. Rigg C. B. — The effect of the Katmai eruption on marine 



vegetation. — Science 2 ser., XL, pag. 509-513, 



32. Schorler B. — Die Algenvegetation an der Felswanden des 



Elbsandsteingebirges. — Abhandl. Nat. Ges. " Isis „ [1914] 

 pag. 3-27. 



33. Sellards E. H. — Some Florida Lakes and lake basins. — An- 



nual Rep. Florida State Geol. SurveyVl, p. 1 15-159, Fig,27-39. 



34. Setchell W. A. — The Law of temperature connected with the 



distribution of the marine Algae. — Ann. Missouri Bot. Gar- 

 den II, 1915, pag. 287-305. 



35. Smith G. M. — The vertical Distribution of Volvox in the 



Plankton of Lake Mónona. — Atner. Journ. of Botany voi. 5, 

 1917, pag. 178-185. 



36. Smith G. M. — A second List of Algae found in Wisconsin 



Lakes. — Trans. Wisconsin Acad. of Se. Arts and Letters 

 voi. XIX, part I, 1918, pag. 614-654, plates X-XV. 



