THE AMERICAN BOTANIST 67 



to follow Nature's plan — plant them in the fall — and had no 

 further trouble. But some of the seed that I had kept dry 

 through one winter were thrown away in the spring and some 

 of them lay upon a cement floor under a shed, where they re- 

 ceived no moisture except what was in the air, until the fol- 

 lowing spring, when five out of the seven seeds found there 

 germinated, still lying on the cement and were planted and 

 made as thrifty vines as those planted in the fall from recently 

 ripened seed. If others have been experimenting along this 

 line, I should be pleased to learn of their success. — Mrs. M. B. 

 S. Charles. 



Pennyroyal of Europe. — In your list of "Oils, Resins 

 and Rubbers" ought you not to mention along with Hedeoma 

 pulegioides as a source of Oil of Pennyroyal, the European 

 plant, Mentha Pnlegium. My druggist tells me that this was 

 the original pennyroyal and is still used ofiicinally in Europe. 

 I found this latter species well established in pastures and 

 along roadsides in the valley of the Mohawk River in Lane 

 County, Oregon, in the summer of 1915 — its first occurence 

 in the West as far as I know. — /. C. N'elson. [It is quite true 

 that the European Mentha Pulcgium for which our species is 

 named, was the original "pennyroyal", but it seems to have 

 been entirely superseded by the American plant. If one looks 

 up oils of pennyroyal in the Pharmacopeia, he will be referred 

 to oil of Hedeoma. — Ed.] 



Name Tinkers ever with Us. — The zoologists, like 

 the botanists, have their troubles over the activities of those 

 who delight in changing names. The following is taken from 

 the address of the retiring Vice-President of the Zoology 

 Section of the American Association for the Advancement of 

 Science delivered at Baltimore. "Will future generations be 

 content to endure some of the enormities perpetrated under 

 our system of nomenclature? Names we must have and 



