60 JOURNAL OF THE [April, 



Nodule of chert with spicules. 



Calcispherae in fossiliferous limestone, polished on two sides, 

 from I.langellen, Wales. 



Microphotograph, containing forty-eight portraits. 



In his communication, Mr. Cunningham stated, that the 

 selected Diatoms — exhibit No. 13 — were transferred directly 

 from a strewn slide to the exhibiting slide by the aid of a 

 " Kain's Mechanical Finger," attached to a Beck's ^ inch objec- 

 tive, the slide being manipulated by the left hand, and the bristle 

 being directed into the field from the left-hand side. This 

 method counteracts the effect of reversal of image, enabling 

 every desired movement to be accomplished with ease and cer- 

 tainty. The right hand assists in racking the Diatom from the 

 slide, high enough to clear th§ edge of the cover-glass, upon 

 which the Diatoms are to be fixed. Very minute species are 

 selected and isolated by this means. And further, that the 

 specimen of fossiliferous limestone from Wales, showing a pro- 

 fusion of Polycystinous bodies — Calcispher?e — may be prized as 

 a relic, from the fact that it was given by Mr. Shrubsole of 

 Chester, England — who first described it to the microscopical 

 ^Qfj(j — to Y)y Stolterforth, the eminent diatomist of Chesty", 

 who, in turn, gave the rough specimen to Mr. Cunningham. 



Meeting of December 2oth, 188S. 



The President, Mr. Charles F. Cox, in the chair. 



Twenty-seven persons present. 



The Corresponding Secretary read a communication from the 

 Hon. Marshall D. Ewell, LL.D., Corresponding Member of the 

 Society, entitled " Amplification in Micrometry." This commu- 

 nication is published in this volume of the Journal, p. 4. 



Mr. Anthony Woodward read, by title, a Paper, entitled 

 " Synopsis of the cretaceous Foraminifera of New Jersey. Part 

 I. Review of previous investigations." This Paper is published 

 in this number of the Journal, p. 45. 



objects exhibited. 



T. Diatoms from Storen, containing Suriella spiralis : by 

 Charles S. Shultz. 



2. The Diatom, Cymatopletira nobilis ; by Charles S. Shultz. 



