132 The American Geologist. ^i^^'^'^' i^*'^- 
x\t Yale Mr. Harris received his training;" in geology from 
the elder Silliman. This study so fascinated him that shortly 
after leaving college he applied himself, as well as his busi- 
ness permitted, to the geology of southwestern Ohio. For 
nearly fifty years he gathered the well-preserved fossils of the 
Cincinnati group and accumulated the most extensive col- 
lection extant of the rarer forms, as star-fishes, cystids, crin- 
oids, and trilobites. 
The bulk and most valuable part of the I. H. Harris col- 
lection consists of fossils from the upper half of the Cincin- 
nati group, there being represented from the entire series of 
beds about 570 species out of a total of about 1,000 known 
forms from the Cincinnatian strata, o'f which from 100 to 150 
are new species. 
The Bryozoa are particularly w'ell represented by an 
abundance of carefully selected specimens, the result of at 
least ten years collecting by Mr. Ernst H. Vaupel, a special 
student of this class of organisms. Many new species are 
present. 
The starfishes, as is well known, are the rarest of Pale- 
ozoic fossils, and Mr. Harris fully appreciated this fact. The 
discovery of a piece of a starfish would lead him to set a lab- 
orer to dig for days, and in more than one case was he thus en- 
abled to secure entire individuals. By constant watch for 
these choice fossils, he eventually secured about fiftv speci- 
mens, and there is no better preserved material than this in 
the Harris collection. The writer hopes soon to puljlish a 
monograph of these fossils. 
Of those peculiar Pelmatozoa, the Edrioastcroidca {Cy- 
clocystoides, Cystasfcr^ Hciiiicysfifcs, Lcpidodisciis, and Strcp- 
tastcr) , the collection has more than 200 specimens, manv of 
which are quite perfect. 
Of crinoids, the collection has, after removing the dupli- 
cates, about 1400 specimens of the genera Aiioiualocriiuis, 
Coinpsocriiiiis. Dendrocriiiiis, Ectenocrinus, Glyptocrinus, 
Hctcrocrinus, Isocriniis, Mcrocriiiiis, OJiiocriiius, Ptychocrlii- 
ns, Pycnocriiiiis, Rctcocriinis, Rhaplianocriniis, and Xciiocrin- 
ns. The great scientific value of this unique series is further 
enhanced by the presence of twelve large and unique slabs, 
each showing from ten to thirtv specimens. One of these has 
