FR hare 10 Op) 97T POriaimal 
N (2 w w 
part of the middle or vertical is twice as thick as the 
(29 2 
back,the RD mas are in between in thickness. With riparia 
all are the same, with Engelmrthe central ones somewhat stronger than 
Dog 
the trans-central. By the way, muricate (Here follows an unrelated in- 
sert, E.D.) I did report to you the locality of the Wriesht Isoetes,. 
A little brook in the pine-regsion of Cuba. 
could be mistaken only: in habitat with Engelmanni ,which Boott seems to 
have accomplished several times, and they are easy to distinguish by 
thei abundand stomata and the vascular bundles of the latter. 
Yesterday I received from Delaware his riparia and valida live, 
The spores are still incomplete, specially of the first and very small; 
The material of the tubers from the preceding year had totally rotted 
and had been partially pushed off already; what interested me most was, 
that this valida from a new locality had a very small sail. Formeriy 
I had seen the sail alway as large; I am now doubly gelad, that I com- 
pared them again with Engelm. 
Two separate railroads to the Pacific Ocean are being construc- 
ted now, one from Chicago, the other from here;both over 500-700 miles 
beyond the Mississippi, and Parry wote me one of these days:"Yester- 
day afternoon we left St. Louis and today we camp at the and of the 
rail on bufallo grass" !!t He is with an expedition, which is exploring 
a southern route throush New Mexico and Arizona; the northern route is 
to pass throush Utah straight to San Francisco,is shorter but has many 
more difficulties and more Bere winters,Next year both of them will 
be in the Rocky Mountains I! 
We have an extremely late Spring but all is plentyful and. opu- 
lous, hopine for a fine harvest,the more so as the South is half star- 
ved (here and there entirely starved); where, unfortunrately, the trees 
bave suffered through wetness and floods, ”s en 
N DIY“ LAALLR DEN Y a 
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6 7 8 ) 10 MISSOURI 
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