99 



Prof. Porter has enabled him to draw up a Hst of sixty, though 

 more than half of the cases mentioned by him are fairly covered by 

 the range as now given in the Manual. Botanists will not be greatly 

 troubled in this regard, I think, if they will give common sense 

 fair play, and consider that when the range is given from New 

 England to Minnesota, for example, the limit is not to be taken 

 as a mathematically straight line connecting the two, and when a 

 plant is said to be common, tliat it may be more common in 

 some sections than others, or may even be wholly wanting in 



^ 



some areas. 



Some ^idditional facts respecting distribution that were over- 

 looked or at the time unknown may here be given. CaltJia na- 

 tans. Pall., not previously known as belonging to our flora, has been 

 collected by Mr. E. J. Hill, at Tower, Minnesota. Dianthns 

 deltoides occurs on the downs of Martha's Vineyard (Miss Edith 

 Watson); Sagina procuuibcns, at Champion, Michigan (E. J. Hill); 

 Solidago iicglecta, var. linoidcs, at Turner^ Maine (John A. Allen); 

 Rucllia pedunculata, Torr., should be added, found at De Soto, 

 Mo., by Dr. If. E. Ilasse. 



Typographical errors, and the like, are unavoidable. Atten- 

 tion is called to a few of some importance. On page 19, the 

 cross-reference should be to page 5. On pages 62 and 6l the 

 genera referred to in the headings of the key should be n. 2, n. 5, 

 and n. 11, in^^tead of n. 3, n. 4, and n. 10. On page 98 the root 

 of Callirrhoc triangulata should be described as fusiform. On 

 page 145, read Ammannia latifolia. On page 375, read Inde- 

 pendence, Mo. On page 383, the upper lip of the corolla of 

 Conobea is 2dobed. On page 441, for Lurs read Leers. On page 

 470, Sweet-fern is omitted as the common name of Myrica 

 asplenifolia, Priuius\% omitted from the Index, and Plate 15 is 

 referred to in the text uniformly as PL 16. These errors will be 

 corrected in the next issue. 



The editors of the Manual have been neither omniscient nor 

 infallible. But the}' have tried to do their best, and knowing 

 something of the book, I will for myself frankly say that I look up- 

 on it, as it stands, as a piece of *' good work/' and I confidently be- 

 lieve that it will be appreciated as such more and more by botan- 

 ists who may use it. SeRENO WatSOX. 



