IODINE IN MARINE FLORA AND FAUNA 53 



SESSIONAL PAPER No. 39b 



The results obtained are shown in the following tables : 



(A). Plants. 



/. Algae. 



(1) Sub-class Chlorophyceae, family Ulvaceae. 



A large number of complete plants were taken in each case, so that the results 

 can be regarded as a fair average. 



Species 



Where obtained 



Amount Iodine 

 . taken found 

 Monostroma fuscum Station; at low tide. . 500 g. . 000024 g. 



Breakwater I. . at low tide . 500 . 00002 1 



Per cent. 

 Iodine 

 0.005% 

 0.004 



Ulva lactuca Dredged in Departure 



var. latissima (?) Bay. 0.500 0.000103 



0.021 



(2) Sub-class Phaeophyceae 



i. Family Desmarestiaceae, species Desmarestia ligulata. 



A single specimen, dredged near the north end of Breakwater Island. 



Species 

 Desmarestia ligulata 



Amount Iodine Per cent. 



taken found Iodine 



0. 500 g. 0.000171 g. 0.034% 



ii. Family Laminariaceae 



The following ahalyses were cariied out on single plants, and on parts of the 

 same plant. 



Species Where obtained Part Amount Iodine Per cent. 



examined taken found Iodine 



Agarum Dredged; Frond 0.500 g. 0.000112 g. 0.022% 



fimbriatum Breakwater I. 



Laminaria 

 saccharina 



Dredged; 

 Breakwater I. 



Frond 



Stipe and 

 holdfast 



0.500 

 0.500 



0.000770 

 0.000790 



0.500 0.001045 



0.154 

 0.158 

 Mean 0.156% 

 0.209 



