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Mr. Turner'^j Calendarium Planlarum marinarum. 127 



the habit of occafionally vifiting the fea, and collc6ling its produc- 

 tions, are led to expecl that whatever they iind they will find in per- 

 fection ; which has not unfrequently been the caufe of error as well 

 to themfelves as to others. For, to mention one inftance among 

 many, the Fucus fubfufcus, which is one of the mod com.xion fpecies 

 upon the Norfolk fhore, and fruftifies only in the earlieft months 

 of fpring, is generally gathered in September, and often throughout 

 the whole winter, with its flem and branches fwollen in various 

 parts ; which fwellings many very learned botanifls have millaken 

 for fruit, and conceived themfelves difcoverers of either, what they 

 called, diamorphous fruftification, or a new fpecies ; although, from 

 having again and again, in company with my worthy friend Mr. Wigg, 

 A. L. S. examined thefe tumours, I can fafely pronounce them no- 

 thing more than the fubllance of the frond fwollen, and caufed, as 

 I imagine, by fome marine infeft, the fame being, though not fo fre- 

 quently, obfervable upon other Fuci. It were eafy to enlarge upon 

 this fubjeft, and produce many fimilar inftances of error ; but as this 

 one is fufficient to eftablifh my point, I fhall refrain from faying more 

 at prefent, as I may probably, at fome future time, lay before this So- 

 ciety a few remarks more particularly relating to the mode of fru£li- 

 lication that obtains in thefe vegetables. 



Having, on the foregoing accounts, been long confcious of the 

 greater facility which would attend our inveftigation of the marine 

 AlgcE, could we fix with tolerable precifion the times when we might 

 expe6l to gather them at maturity, I have conftantly habituated 

 myfelf to commit to writing at what months I have found the dif- 

 ferent fpecies in fruit ; and though my lift muft neceflarily be im- 

 perfeft, as well becaufe I am obliged to truft to the winds and waves, 

 the nature of our fhore not allowing us to vifit them in their places 

 of growth, as becaufe we find upon our coaft only a limited num- 

 ber. 



