PROCEEDINGS OF SOCIETIES. 241 



of thus writing, because it would appear at first sight that the placard 

 was issued under my special cognizance and approval. 



" I recommended Mr. Turberville to send his views to print ; but if 

 the Editor of the ' Microscopical Journal ' has refused to publish them, 

 that can be no reason for dragging my name before the public by a 

 placard. There are, indeed, several very intea-esting points raised in 

 his letter ; but I cannot accord my unqualified approval to every 

 opinion, nor in any way be responsible for them, especially as regards 

 the differential merits of the opticians named in these remarkable 

 letters." 



NiTZSCHIA CURVULA. 



To the Editor of the ^ Monti dy Microscopical Journal!' 



Sir,— Some confusion appears to exist respecting the above sjiecies. 



The form in the " Typen Flatten" is the Nitzschia sigma of Smith, the 



N. sigma of Kiitzing is Homeocladia sigmoidea of Smith. The true 



Nitzschia cm-vula of the latter author is not a Nitzschia, but a Suri- 



rella S. intermedia of Professor Lewis. -^j , , 



Yours truly, 



F. KiTTON. 



PKOCEEDINGS OF SOCIETIES. 



Royal Microscopical Society. 



King's College, October 1, 1873. 



Charles Brooke, Esq., F.E.S., President, in the chair. 



The minutes of the preceding meeting were read and confirmed. 



A list of donations received since Jime 4th was read, and the 

 thanks of the meeting were voted to the donors. 



The Secretary read a paper by Dr. Maddox, " On an Organism 

 found in Fresh-pond Water." The paper was illustrated by drawings, 

 and will be found printed at page 201. 



The thanks of the Society were unanimously voted to Dr. Maddox 

 for his paper. 



The President said that on looking over the drawings which accom- 

 panied the paper, he thought that one of them seemed to present very 

 strongly the characters of an amoeba. He also understood Dr. Maddox 

 to state in his paper that there was no sign of a nucleus in the speci- 

 mens examined, but he thought that one or two of the drawings seemed 

 to show what looked very like a nucleus. He hoped they should be 

 favoured with some observations upon the subject from gentlemen 

 present who might have given attention to the amoeboid forms of life. 



The President announced that they were favoured with another 

 paper from Mr. F. Kitton, of Norwich, describing some new species of 

 DiatomacejB ; but as the paper was merely descriptive, and had refer- 

 ence to objects figured, it would be taken as read, and would be printed 



