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THE MICBOGOKEDIA OF TBESHWATEB ALG j:. 145 



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We also made a comparative trial with 



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It, ', 



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oDtamed a decided red with a spirituous solutaon on the addition 

 of strong nitric acid (No. 2). Our manipulation then, in this 

 case, is not at fault. 



Of course, no more weight is to. be attached to such a rough 



chemical examination than it deserves, but it is at least sug- 

 gestive. 



Mould destroys the virtue of many drugs, and why not of opium ? 

 We ought to have had a portion of the opium from the cakes to 



two specimens 



A - 



M. J. Beekelet 



evould naturally be defic 

 ^ed with good opium ; bu 

 after moulds have grown 



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Note on the Eecent Discoveries in relation to the Microgonidia 



Freshwater Aha. Bv the Eev. M. J. Berkeley. F.L.S. &c 



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[Bead 





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Amon 







logy of Algi 



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3h light has been thrown by the beautifxil observations 

 ™iigsheim, the functions of the little organs which Braun 1 

 overed in very different groups of freshwater Alga^ and 



dis 



lected. 



igonidia^ have 



T^th of an 



length, and are often not half that size, are clavate above and 

 strongly attenuated 



um 



|>y one or two septa, and occur in little groups or separately on or 

 111 the neighbourhood of the large spores. They soon attain their 

 full development, and ooen bv means of a little lid at their apex, 



throu 



ch their contents are rapidly evacuated. Pringsheim 

 (Edogonium (Vestcuhfera, Hass.) and BulbocAate, t 



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wnen the contents of the swollen joints in which the spores ongm- 

 ate have been concentrated, a round lateral aperture in.the former, 

 and one or more circular fissures in the latter are formed, by means 



exDosed to the entrance of minute bodies from 



are 



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^thout. As the microgonidia burst at the same time with the 

 formation of these apertures, Pringsheim conjectures with great 

 probability that they perform the same functions as the horn-like 



IpnX. PBOO.— BOTANY. ^ 







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