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Notes on Diatoms. 
We have received from Dr. Geo. H. Taylor, of Mobile, a very 
interesting gathering of marine diatoms from Tampa Bay, 
Florida. The following is a list of the species which it contains: 
Actinoptychus splendens, Shadbolt. 
A. undulatus, Ehr. 
Amphiprora elegans, W. Sm. 
Auliscus pruinosus, Bailey. 
A. celatus, Bailey. 
Biddulphia pulchella, Gray. Rare. 
B. rhombus, W. Sm. 
Campylodiscus cribrosus, W. Sm. 
' Eupodiscus A rgus, Ehr. 
£. radiatus, Bailey. 
Melosira sulcata, Kutz. (= Orthosira marina.) 
Navicula Lyra, Ehr. 
NV. permagna, Edwards. 
Rhabdonema arcuatum, Kutz. Rare. 
Stauronets aspera, Kutz. 
Surirella Febigerii, Lewis. 
Triceratium favus, Ehr. 
T. scitulum, Bright. (=var. of T. favus.) 
T. spinosum, Bailey. Rare. 
Tryblionella scutellum,W. Sm. (=WNitzschia circumsuta.) 
Terpsinde musica, Ehr. 
Dr. Taylor’s letter will doubtless interest many of our readers. 
[oak] 
Lditor of BULLETIN : 
I have read with interest an article on diatoms by Mr. C. H. 
Kain, which appeared in the February number of your journal. 
The article is valuable from the fact that Mr. Kain relates his ex- 
perience in the actual field of investigation, and speaks only of 
what he has accomplished. Mr. Kain unfortunately cautions the — 
avoidance of muds in the collection of diatoms. In this I do not 
: agree with him, for, if we avoid the muds, we are cut off from. 
some of the finest specimens that are easily obtainable by all, 
whether they reside near the coast or thousands of miles from it. 
I am now engaged in working up the muds of the North Carolina | 
