ELISHA MITCHELL SCIENTIFIC SOCIETY 



47 



Plants. 



Dav. iMonlh. i ^'ear. 



Crataegus Crus-galli, (Cockspur Thorn) 



Crataegus Oxycanthus, L. (English Hawthorn) 



Erythronium Americanum, Smith. (Dog-tooth Violet). 



Fragaria Virginiana, Ehrh. (Virginia Strawberry) 



Fraximus Americana, L. (While Ashe) . . 



Houstoniri Cacerulea, L. (Bluts, Innocence) 



Iris versicolor, L. (Large Blue Flag) ... . 



Benzoin odoriferum, Nees. (Spice Bush) ... 



i 



Liriodendron Tulipifera, L. (Tulip Tree. Poplar) 



Morus rubra, L. (Red Mulberry) j 



Platanus occidentalis, L. (Sycamore) 



Pirus communis, (Pear) -j 



Pirus malus, (Apple) - -] 



Quercus alba, L. (White Oak) -| 



Rhododendron nudiflorum, Torr. (Azalea. False Hon- 

 eysuckle) 



Robinia Psendacacea, L. Common Locust) 



Rosa rubiginosa, L. (Sweet Brier. Eglantine) 



Rubus villosus, Ait. (Blackberry) I_ •] 



Sambucus canadensis L. (Common Elder) 



Sanginaria candensis, L. (Blood Root -j 



Sassafras officinale, Nees, (Sassafras) 



Syringa Vulgaris (Lilac) -] 



Taraxacum Dens-leonis, Desf. (Dandelion) 



Ulmus Americana L. (American Elm) -! 



Viburnum Opulus (Snowball) 



29 



7 



20 



I 



9 

 15 

 12 

 20 



28 



19 

 25 

 6 

 10 

 II 



7 

 28 



25 

 12 



9 



20 



24 



I 



26 



I 



II 



20 



30 



17 



23 



28 



I 



I 



3 

 10 



3 

 4 

 3 

 4 

 4 

 2 



4 

 4 

 3 

 3 

 4 

 4 

 4 

 3 

 3 

 3 

 3 

 3 

 3 



4 

 4 

 4 



3 

 4 



J 

 3 

 3 

 4 

 3 

 3 

 4 

 4 

 4 

 5 



85S. 

 858. 

 S53. 

 853. 



S58. 



853. 

 853. 



853. 



853. 



858. 



854. 

 858. 



853. 



853. 

 8^8. 



853. 

 853. 



853. 



858. 



853. 

 853. 

 153- 



853- 

 85S. 



853. 

 853. 

 85S. 



853. 

 853. 

 858. 



855. 

 853- 



858. 



S53. 



ZINC IN DRINKING WATER. 



The increase in the use of galvanized iron, especially in the form 

 of water tanks and pipes, has lead to a reopening of the question 

 as to the possible injurious effects from the use of such water. It 

 is a matter of importance then to us how far our knowledge extends 

 on this subject, and I will collect here all of the known facts so far 

 as I have been able to get at them. 



The so-called galvanized iron is of course nothing more than iron 



