105 



Journal of Visit to Vineyards of Spain and France, Jas. Bushby, 1835. 

 Observations on Character and Cultivation of European Wine, S. I. Fisher, 



1834. 

 Kural P]ssays on Horticulture, A. J. Downing, 1858. 

 The American Grape Growers' Guide, Win. Charlton. 

 The Fruits and Fruit Trees of North America, A. J. Downing, 1886. 

 Theory of Horticulture, .John Lindley, 1841. 

 Plants, Henderson's Hand Book of, Peter Henderson, 1881. 

 Plants and Fruits, Hand Book of, L. D. Chapin, 1843. 

 Trans, of Mississippi Valley Horticultural Society, 1883. 

 Vineyard Culture, A. Du Breinl, 1867. 

 Western Fruit Book, F. R. Ellicott, 1859. 



3Iedical Botany — 



Flora Medica, .John Lindley, 1838. 

 Medical Botany, R. E. (Triffiths, 1847, 



Periodicals — 



Botanical Gazette, partially bound, A'^ols. viii, x, xix, bound, x, xvi, xvii, 



xviii, incomplete and unbound. 

 Botanical Magazine, Curtis, Vols. 1-10 inclusive, 1793 -. 



Microscope Slides of Vegetable Material for Use in Determinative 

 Work. By .John S. Wright. 



In the determination of plants it is frequently necessary, or at least desirable, 

 to make examinations of various organs with the aid of a lens. Seed markings, 

 glandular structures and many portions of ,tlie flower upon which determinations 

 are partly based may be so minute as to necessitate slight magnification for satis- 

 factory work. For example we have in the Euphorbias and Lobelias many species 

 in which the seeds are to the naked eye mere granules, l)ut under a liand lens 

 their surfaces are seen to be decidedly marked with irregular ridges and pits, or 

 are handsomely sculptured. Many leaves contain glandular structures, or are 

 covered with liairs or scales which can be best seen under the lens. In determin- 

 ing specimens on which such structures exist and are of value in classification, it 

 is often desirable to compare them with like material from well determined her- 

 barium specimens. Commonly the material for these comparisons is dug out of 

 or cut off the herbarium specimen as it is needed from time to time and placed 



