10 JOURNAL OF THE [January, 



4. Pipette Filter, for the easy manipulation of hgematoxylin, 

 anilin green, etc. 



Exhibits 1-4 by Frank D. Skeel. 



5. Codfish, entire, three days old, from the Biological Labora- 

 tory at Wood's Holl : by H. W. Calef. 



6. Photomicrograph of the epiderm of the stem of Geranium : 

 by Carl Heitzmann. 



7. Pyritized diatoms, from Galveston, Texas, prepared by K. 

 M. Cunningham : by J. L. Zabriskie. 



8. Stinging hairs of the larva of Einpretia stimtilea Clemens, 

 the "Saddle-back Caterpillar" : by J. L. Zabriskie. 



Dr. Skeel stated, concerning his exhibit of Hoya, that the plant 

 belongs to the Palm family, and that the sections were stained 

 with anilin green, the fibro-vascular bundles taking the green, 

 while the other structures remain unstained. 



Dr. N. L. Britton referred to the great abundance of sclerotic 

 cells in the stem of Hoya, and said that Dr. Northrup, using the 

 same stain as Dr. Skeel, was examining this stem near the time of 

 his death, attempting to find the origin and function of these 

 sclerotic cells. 



Dr. Skeel also explained the Pipette Filter contrived and ex- 

 hibited by him. 



Mr. F. W. Leggett gave some observations on Paradise Fish 

 reared by him in an aquarium, remarking upon the dissimilarity 

 of the male and female, and upon their quarrelsome disposition. 



Dr. Bashford Dean stated that in 1840 a French officer brought 

 home a pair of these fish in an ice-pitcher ; that they are now 

 abundant in the aquaria of Europe ; and that they show most re- 

 markable endurance of foul water and careless treatment. 



Dr. Carl Heitzmann explained that the photomicrograph exhib- 

 ited by him v/as taken under a power of 1,000 diameters, and il- 

 lustrated the reticular structure of the protoplasm, and the so- 

 called ''intercellular connections" in the stem of Geranium, and 

 continued as follows : 



"The reticular structure of animal protoplasm I demonstrated 

 first twenty years ago, although S. Strieker, of Vienna, succeeded 

 two years since in reproducing the reticulum in a living, colorless, 

 coarsely granular blood-corpuscle of a proteus, by means of the 

 electric microscope, with a power of 2,500 diameters. In Ger- 



