T). D. 

 DISSERTATIO ACADEMICA, 



DE [&) 



SCIENTIA B TANICA 



UTILI ATQ.UE ^UCUNDA, 



■««= ^S^B I 



QU A M 



CONS, EXP. FACULT. MED. UPS. 



PRMSIDE 



CAROL. PET. 

 THUNBERG, 



EcjuiTE AuRAT. Reg. Ort). de Vasa , 

 Msoic. DocT. Profess. Med. et Botan. Reg. et Ord. , AcAD. C;esar. 



NaT. CuFUOS. ReG. ScJENT. LONDINENS. HotMIENS. SoCIET. SciENT, UpSAL. 



P\ni.*D. Patb. Holm. Beeol. Nat. Scbwt. Pafis. et Hafniens. Hist. Nat. 



LuND.ilARiEM. Amsteld. Zeland. Nidrosiens.Ticinens. Halens. Nat. Scrut. 



Linn.Londin.Medic.Edimeurg. et Nat.Studios.Tbid.Meubbo j nec non Acao. 



SciENT. Paris. MnNSPEiiENS, Agricult. Paris. Medic. Londin. 



Florentin. et Batavin, Ind. Or. Correspond. ji^ 



PUBLTCO EXAMINI SUBMITTIT ^qardBN 



^OHANNES ^ACOBUS HEDREN, 



STIP, REG. WERMELANDUS. 



IN AUD. GUST. MAJ. D. XX DEC. MDCCXCIIL 



HORLS A. M. CONSVETIS, 



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U P S A L I ^, 



LITTERIS VIDUiC DUECT. JOH. EdMAN. 



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