331 
sults of original work are requested to state their preparation for 
’ the investigation they propose to undertake. 
Under the rules of Washington University, persons entitled to 
candidacy in that institution for the Master's or Doctor’s degree 
may elect botanical research work asa principal study for such 
degrees, if they can devote the requisite time to resident study. 
WILLIAM TRELEASE, 
Director. 
St. Louts, Mo., May 8, 1895. 
Botanical Notes. 
Lhe Pignuts. There is some question as to the exact distribu- 
tion of the Common Pignut (Carya porcina or Hicoria glabra) and 
the related Carya or Hicoria microcarpa, and the undersigned will 
be grateful for herbarium specimens and especially nuts with their 
husks, representing both. In the recently published seventh vol- 
ume of Professor Sargent’s Silvaa, the range of g/aéra is given as 
southern Maine to southern Ontario, through southern Michigan 
to southeastern Nebraska, southward to the shores of the Indian 
River and Peace Creek in Florida, and to southern Alabama and 
Mississippi, through Missouri and Arkansas to eastern Kansas and 
the Indian Territory, and to the valley of the Nueces River in 
Texas. H. microcarpa (treated in the Silva as a variety of g/aéra, 
under the varietal name odorata) is said to occur in eastern Mass- 
achusetts, Connecticut, eastern and central New York, eastern 
Pennsylvania, Delaware, the District of Columbia, central Michi- 
gan, southern Indiana and Illinois and Missouri. 
WILLIAM TRELEASE. 
Reviews, 
A Monograph of the Mycetozoa. Arthur Lister, F. L. S. 
London. Printed by order of the Trustees of the British Museum. 
Rostafinski’s monograph of the Mycetozoa appeared in 1875, 
and with the appendix described about 230 species. Massee’s 
“Monograph of the Myxogastres” was published in 1892; it 
