42 JOURNAL OF THE [January, 



2. Arachnoidiscus Ehrenbergii, in its natural condition and in 

 situ upon a marine alga : X 40. 



3. A group of diatoms, with six of the Actynoptycus, being the 

 same as shown in the first figure of the second column of " The 

 World." Also six of the Triceratium, being the same as shown 

 by the second and third figures in the same column : X 50. 



4. The diatom, Isthmia emrvis, in situ on marine algae, as an 

 example of the fourth figure in the second column of "The 

 World": X 50. 



5. A portion of the tracheal system of a Silk-worm, similar to 

 the last figure in "The World," and said there to be "enlarged 

 one million times ": X 30. 



These objects, from i to 5 inclusive, were exhibited, in illus- 

 tration of his Paper, read at this meeting, by Charles S. 

 Shultz, 



6. Peridium of the fungus, Reestelia aurantiaca, Peck, from 

 fruit of Craicegus oxyacantha, L., English Hawthorn : by J. L. 

 Zabriskie. 



7. Cells of the peridium and spores of Roestelia auraniiaca, 

 Peck : by J. L. Zabriskie. 



8. Suctorial disks on the fore leg of Dytiscus fasciventris : by 

 J. D. Hyatt. 



9. Section of the mineral Phonolite, from Berks Co., Pa.: by 

 J. D. Hyatt. 



10. Crystals of Butter, polarized : by Edgar J. Wright. 



11. A very rare book, "Testacea Microscopica aliaque minuta 

 ex generibus Argonauta et Nautilus ad naturam delineata et 

 descripta a Leopoldo a Fichtel et Jo Paulo Carolo a Moll. 

 Wien, 1803:" by A. Woodward. 



Mr. Zabriskie stated concerning his exhibits, that the fungus, 

 Rxstelia aurantiaca, is related to the cluster-cups, and is found 

 upon the Apple, the Quince, the Service Berry, Atnelanchier 

 Canadensis, and the English Hawthorn, Cratcegus oxyacantha. 

 He found it seventeen years ago, in 187 1, near Albany, upon 

 fruit of Amelanchier, and it was found during the same year by 

 Prof. Charles H. Peck, and the late Hon. G. W. Clinton. It has 

 been abundant this present year upon fruit of the Hawthorn at 

 Flatbush, Long Island. It is described by Prof. Peck in the 

 25th Report of the N. Y. State Museum, p. 91. It is inter- 

 esting because of its own elegant appearance, and because of 



