20 JOURNAL OF THE [April,. 



trees and plants : linden, hop-tree, horse-chestnut, maple, 

 locust, raspberry, pear, plum, hawthorn, currant, ash, elm, hack- 

 berry, willow, poplar, and yucca, etc., etc. 



There is but a single generation of this species each year in 

 the North, where the eggs hatch in the latter part of May or 

 early in June, and two generations in the South. The female 

 lays from twelve to one hundred white eggs under the scale. 

 The young at first are reddish, and resemble mites. They run 

 over the twigs and leaves, and in two or three days fix them- 

 selves to one spot, settle for life, and suck the sap of the tree. 



4. Eggs and Scale of Chionaspis PinifolicB, Fitch. The 

 Pineleaf Scale-Louse : exhibited by W. Beuttenmuller. 



This species, which belongs to the same family as the pre- 

 ceding, infests the leaves of various species of pines and spruces 

 throughout the eastern United States, from New York to 

 Florida. The female lays from twenty-five to thirty-five pink- 

 ish, oval eggs, which are crowded in the scale. When the 

 female has laid all her eggs, she dies and dries up at the smaller 

 end of the scale. 



5. Steel from Tire of a Locomotive Driving Wheel : exhibi- 

 ted by P. H. Dudley. 



The size of the so-called " Crystals" is the largest of any yet 

 seen by the exhibitor in rolled or hammered steel. The tire did 

 not have sufficient tensile strength to stand the usual shrinkage 

 of other tires, and broke after being put on the wheel, while 

 standing in the shop. 



6. Section of Furnace Slag containing Crystal and Micro- 

 liths : exhibited by J. D. Hyatt. 



OBJECTS FROM THE SOCIETY'S CABINET. 



7. " Challenger" soundings, 1850 fathoms. 



8. Diatoms from Santa Monica. 



9. Palate of Buccinutn obsoletiim. 



The palate, tongue, or odontophore, as it is sometimes desig. 

 nated, is a very interesting object, though quite unlike'"the 

 tongue or palate of the higher animals. 



Carpenter says : " It is a tube that passes backwards and 

 downwards beneath the mouth closed at its hinder end, whilst 

 in front it opens obliquely upon the floor of the mouth, being 

 (as it were) slit up and spread out so as to form a nearly flat 



