Botany and Zoology. ; 139 
of the young around him. * * * They have been the means of awaken- 
ing a thirst of knowledge amongst the people of the place of his ee 
a desire for good educational institutions, until Chester county h 
Ses — for the general intelligence of its citizens, and the peed of 
i | numero chools, 
“Temperate in in =a habits, moral and religious in his character, in the full 
maturity of yea with his mental neces almost unimpaired to the last, 
he enjoyed with fanaa ection, at a 0 e, the consciousness of a life well 
spent, and the contemplation of the ripened Fruits produced as the results of 
his earlier and late ter labors, and in the ——— of the respect of a grateful 
_ community, he was enabled to feel that his career had been a useful.one to 
e people amongst whom Providence had signed him, and that bis years were 
not aie like those of the fool or the sluggard, bit improved to the bene- 
It is ee ree Dr. Daring a left in the hands of a friend 
an autobiography. e know not whether this was written in view of 
future publication ; but it wu probably with propriety be printed, after 
some lapse of time, along with selections from his correspondence, for 
the e gratification of the numerous ~_— of the writer, or even for the 
instruction of a wider circle of rea G. 
ZooLoey— 
1. Observations on the genus — together with descriptions of new 
ies, their soft parts and em forms, in the family Unionidae, 
229 new species = Melanidz, the figures executed on stone with remark- 
_ able beauty and correctness. For the greater part of these Melanida Mr. 
ostoma s having a cut in the upper part of the outer lip. 
having a retrorse callus at base, and usually a nearly 
