HYPERSENSITIVENESS 575 



"5. Solutions essential — minimum requirements: 



Common pollen for locality Foods: 



House dust Wheat 



Orris root Oats 



Silk ' Corn 



Cottonseed Buckwheat 



Kapok Rice 



LePage 's glue Rye 



Danders : l^gg 



Horse Milk 



Dog Beer 



Cat Lamb 



Cow Pork 



Rabbit Oyster 



Sheep Crab 



Flaxseed One common fish 



Feathers : Beans 



Chicken Potatoes 



Duck Spinach 



Goose Coconut 



Cantaloupe 



Peanut 



Celery 



Peas 



Strawberry 



Orange 



Tomato 



Chicken 



Mustard 



Chocolate 



* ' 6. Syringes and needles. At least four dozen. 



"7. An adequate record system." 



In regard to personnel they recommend that anyone who does 

 skin tests should have training and experience that is satisfactory 

 to the Standards Committee. 



Pollen Extracts.— Noon Pollen Unit. — According to Coca 

 (1934) the first person to apply the principle of specific desensi- 

 tization in hay fever was Noon (1911). He employed as a unit 

 of atopen the amount present in the saline extract from one- 

 millionth of a gram of pollen. 



Controversy Over Nature of Exciting Agent in Pollen. — 

 Objections have been raised to the unit proposed by Noon, since 

 French observed that the weight of a pollen is not always an ac- 

 curate index of its content of exciting agent. There is at present 

 definite disagreement over the nature of the exciting agent in 

 pollen. Grove and Coca (1925) regard it as nonprotein in nature; 

 Stull, Cooke and Tennant and their associates (1930, 1931, 1932, 



