380 Forty-second Report on tee State Museum. 



I am indebted to Rev. W. H. Barris, of Davenport, Iowa, for 

 his willingness to assist me in this work, and having made an 

 arrangement for the purchase of his collection am still hoping 

 that it may be made useful in the preparation of this volume. 



Prof. Calvin, of Iowa University, has been very liberal in loan- 

 ing and otherwise furnishing specimens for study and illustration 

 in the volume. Through his good will I have been enabled to 

 give a figure of the typical specimen of StricHandinia castellana, 

 and of Spirifera MacBridei, as well as Spirifera urbana, I was 

 also able to obtain from him, for illustration, the rare Lingida 

 Philomela of Billings and other specimens. While he has sent 

 to us many interesting species for comparison and use in the 

 volume, and notably a large number of Terebratula Calvini for 

 cutting or for use in any manner in forwarding the objects of this 

 volume. 



At Columbus, Ohio, Prof. Edward Orton, the State Geologist, 

 placed the Brachiopoda of the State collection, as well as of 

 his own private collection, at my disposal. I was able to select 

 a considerable number of Trinierelhe, which afford excellent illus- 

 trations of the character of this fossil ; also of Triple sia and other 

 forms not available from New York localities. 



This material has been brought to Albany and is held subject 

 to the order of Prof. Orton, and will be returned to him on com- 

 pletion of the volume. This gentleman has promised, however, 

 that, after the return of the specimens, he will furnish to the State 

 Museum an illustrative collection of these forms from his own 

 private cabinet. 



I also visited and examined the collection of Mr. Moores, on Day 

 street, Columbus, which contains much interesting material in 

 several classes of fossils, but I found nothing of especial interest 

 for my purposes. At a later date I have communicated a report in 

 detail upon Mr. Moores' collection, which he has offered for sale 

 at a moderate price. 



I visited Granville, Ohio, and the collection of the Denison Uni- 

 versity. Prof. C. L. Herrick, of Denison University," has sent 

 down, for our use, some interesting forms of Brachiopoda from 

 the Waverly sandstone of Licking county, Ohio. These are 

 interesting for comparison with Chemung forms, and with certain 

 specific forms described from this region many years since by the 



*Now of the Cincinnati University. 



