1880.] NATURAL SCIENCES OF rHILADELPHIA. 349 



The investigation of the interesting collection of remains secured 

 by Mr. Paret, had led Prof. L. to examine a small collection of 

 bones in the Museum of the Academy, which had been presented 

 upwards of thirty years ago, as a sample of many of the same 

 kind discovered in Durham Cave, Bucks Co., Pa. The cave 

 appears to have since been obliterated in the quarrying of lime- 

 stone. At the time of the presentation of the specimens of bones 

 the}' were recognized as pertaining to existing species of animals 

 and were therefore regarded as of little interest, though fortu- 

 nately they have been preserved. 



Prof. Leidy remarked that these bones Avere of the same charac- 

 ter as those of Hartman's Cave, and he had distinguished among 

 them the followino- : 



The Black Bear, Ursus americanus : Raccoon, Skunk, Gray 

 Fox, Deer, Moose, Alee americanu>< ; Woodland Reindeer, Bison, 

 Gray Squirrel, Rabbit, Beaver, Muskrat, Porcupine, Woodchuck, 

 Woodrat, Wild Turkey, Box Tortoise, Snapper, Snake, Sturgeon, 

 and Cattish. 



The examination of these collections show that the exploration 

 of small caves may not only prove of ethnographic value, but 

 serve to give us information relative to the early fauna of the 

 countr}'. Thirty years ago Prof. Baird gave an account of the 

 exploration of some bone caves in this State (Proc. Am. Assoc, 

 II, 1849, 352). He refers to a vast accumulation of remains in 

 one of the caves, and remarks that the number of species of mam- 

 malia found is twice that of present existing species in Pennsyl- 

 vania. It is to be regretted that no further account has yet been 

 given of the species to which the remains belong. 



Dimorphic Flowers in Hoiistonia. — Mr.Tnos. Meehan remarked 

 that flowers dimorphic in their sexual character were well known. 

 Generalh' there was little difference in the corolla between the 

 short styled or long styled flowers, but in Houstonia cceridea^ L., 

 the long st^'led form was accompampanied by a thick tube, while 

 the tul)e in the short styled form was not more than half the 

 diameter of the other. In this species of Houstonia the anthers 

 were placed on a ledge which was at the base of the tube in the 

 long styled form. In the short styled form the anthers were 

 brought to the mouth of the corolla without any lengthening of 

 filaments, but by the bringing up of this ledge on which the 

 anthers are placed. The position of the anthers at the mouth or 

 at the base of the tube, was in fact decided by the modification of 

 the form of the corolla tube. This had been explained in the 

 first series of " Flowers and Ferns of the United States." In a 

 recent examination of Houstonia serpullifoHa^ Mx., on the top of 

 Roan Mountain in North Carolina, Mr. Meehan found preciselv 

 the same characters in that species. On the same mountain 

 Houstonia purpurea^ L., abounds, and also has a similar sexual 

 dimorphism, but_in]^this case the elevation of the anthers is due 



