Corresj^ondence. 131 
discriiiiiiiatr'd it from tliu liocone sands), might appropriately be adopted, 
with the assent of Satford, as one of the parties to the former agree- 
ment. This having bc^en secured, it would seem advisable that all unite 
upon the use, hereafter, of "Lafayette" as the equivalent of the 
Oraiuie sand (as understood by Saflford and myself) of the southwest, 
and of the Appomattox as defined by McGoe for the Atlantic and south- 
eastern states. Wiiatever diflfcirenccis of opinion may e.xist in regard to 
the genesis of the formation, or the assignment of parti(uilar local 
phases, will be more readily discussed and reconciled when a single 
luime only is employed by all. E. W. IIii.gakd. 
Berliclcy, Cat., June 15, 1H!)1. 
The above paper was sent to me previous to publication for examina- 
tion, and, if acceptable, for my approval. Prof. Hilgard has given the 
correct history of the names "Orange sand " and " Lagrange," and, in 
the prospect of harmonizing views all around, thereby facilitating 
the study of the beds concerned, I heartily concur in the conclusion 
reached by him in conference with the gentlemen mentioned above. It 
is pleasant to know that, in im[)ortant points, a satisfactory under- 
standing now exists. Ja.s. M. Safford. 
Nashville, Tcnn., June ?.?, IS!)1. 
Eev of Lit 
PERSONAL AND SCIENTIFIC NEAVS. 
xMr. KiiA.NK L. Nason, Late Assistant Oeolooist of the New 
Jersey Geological Survey, has l)een appointed to tlie position of 
assistant geologist on tlic (ieological Survey of IMissouri, and will 
he in eliarge of the examination of the iron ores of the state. 
Other assigniucnts for tiie summer work of the latter survey are 
as follows: l*rof. Erasmus Haworth has resumed work on the 
crystalline rocks and will also collect material for the preparation 
of a report on the mineralog}' and petrography' of the state. 
Prof. C. H. (iordon has similarly resumed work in the coal fields, 
and most of his time will he given tf^ the detailed study and map- 
ping of the coal heds of Macon county. Prof. J. E. Todd, of 
Tahor, la., has heen engaged to take up the study of the quarter- 
nary deposits of the state and to pi-epare a report thereon. 
PuoF. ]\Iakk W. IlAKRNKiTON, profcs.sor of astronom}' and di- 
rector of the Detroit ohservator}' at Ann Arbor, Mich., was ap- 
l)ointed I)y the secretary of agriculture to have charge of the 
'■Weather Bureau" at Washington, lately transferred from the 
War Department to the Agricultural Department, and assumed 
charge July 1st. 
TiiK OdDKX Sf'iK.vTrFir ScriooL is to he a department of Chi- 
cago TJniversit}'. It is ha.sed on a gift by Wm. B. Ogden, first 
maNor of Chicago, lately decided by the executors of the Ogden 
estate. The conditions attached by the execuUn-s to the gift — 
