Editors' Letter- Box. 191 



most popub.r per.rs, and justly recommended for general cultivation ; but within 

 a few years it has been so subject to crack and rust, in many parts of the country, 

 that it should be planted cautiously, especially as, judging from the fate which 

 has overtaken other varieties, this deterioration is likely to extend to parts of the 

 country now free. 



The " Walter " Grape. — Late in the spring of 1868, a vine of this variety 

 was sent me for trial. Last summer it bore three bunches of grapes. There is 

 but one word that describes them, and that is — delicious. 



I have some forty varieties in my garden, most of them new. Not one, in my 

 estimation, excels, or even equals, the " Walter." The vine is hardy and a 

 good grower. A. C. L. 



Madison, Ind., February g, 1870. 



Mr. Editor: In 1868, I found several black grapes — evidently Concord 

 — growing upon the same stem bearing Catawba grapes. A Concord vine was 

 within seven feet of the Catawba, and bearing grapes. Have you, or any of your 

 readers, witnessed a similar product of a vine .'' R. L. U. 



Greencasti.e, Indiana. 



We have never witnessed such an instance of "sport" in a grape vine as is 

 described above ; and, to tell the truth, we feel a little incredulous about it. If 

 any of our readers have ever noticed such a product of a vine, we would like to 

 know of it. 



J. W. B., Harrison Square, Mass. — You will find, in the back numbers of the 

 Journal, many plans of greenhouses and graperies. We cannot give you hints 

 adapted to your particular location, without knowing something about it. 



The general principles of construction you will find in our back numbers. As 

 to double glazing, you can easily run out to Mr. Strong's greenhouses, at Brigh- 

 ton, and see for yourself the working result, which will be worth a volume of 

 theory. The principle of double glazing was fully stated in the article in the 

 journal to which you refer. 



L. H. B., Deposit, N. Y. — We cannot tell you where to obtain seed of Canna 

 grandijiora floribuiida in this country. It is a new and scarce variety in Eng- 

 land. 



We are glad to hear such a favorable report of C. Bihorelli, as we think it very 

 fine. C. Nepalensis, Depute Hernon, Marechal Vailliant, and Reiidatlerii, are 

 all very fine both in foliage and flower, and will give you perfect satisfaction. 

 You can get seed of all from B. K. Bliss, of New York. 



Therehave been two parts of " Beautiful-leaved I^lants " published. You will 

 receive the remaining numbers as they are issued. 



J. C, Havana, 111. — The " invariable law of color in plants," of which you 

 speak, is imperfectly understood, if, indeed, it exists at all. It was once consid- 

 ered certain that no genus, in which the prevailing colors were red or yellow, 



