OKLAHOMA ACADEMY OF SCIENCE 71 



XXX. THE CHEMISTRY OF THE PECAN 



W. G. Friedemann, Assistan Chemist 



Oklahoma Agricultural Experiment Station 



The pecan contains 40% to 60% kernals. An average of 14 

 analyses of the pecan kernel is water 3.20%- ash 1.57'^/r, protein (Nx 

 6.34) 11.00%. crude fiber 2.20%, nitrogen-free extract 10.04%, fat 

 71.99%. 



The carbohydrates of the pecan were investigated by W. G. 

 Friedemann and found to be sucrose 9.03%, invert sugars 21.90%, 

 araban 14.82%, methylpentosans 1.68%, cellulose (crude fiber) 

 14.29%. amyloid 4.54%, tannins 2.57%, other hemicelluloses etc., 

 31.17%.. 



The protein of the pecan kernel was found to be a globulin 

 by Cajori. Dowell and Menaul obtained the same nitrogen distri- 

 bution in the 2-10%' NaOH solution soluble protein. 



The nitrogen distribution of pecan globulin is amide nitrogen 

 9.8%. humin nitrogen 3.6%, arginine nitrogen 23.0%, histidine ni- 

 trogen 3.7'/o. cystine nitrogen 0.87o,^ lysine nitrogen 5.9%, mono- 

 amino nitrogen 52.0%, and non-amino nitrogen 0.8%. 



Pecan oil was analyzed by Deiller and Fraps and had a specific 

 gravity at 15° of 0.9184, saponification value 189.0, iodine value 106.0, 

 Reichert-Meissl value 2.2, and insoluble fatty acids and unsaponifi- 

 able matter 93.4%. 



XXXI. MULTIPLE MILIARY EDENOMATA OF THE 



KIDNEY CORTEX WITH SPECIAL REFERENCE 



TO HISTOGENESIS 



Mrs. Julia Steele Eley 



From the Department of Pathology of the University of Oklahoma. 



Recent interest in recasting our knowledge of the kidney has 

 included among other things a study of tumors of the kidney and 

 special attention has been given to the histogenesis of renal neo- 

 plasms. The medical literature was reviewed and various articles 

 were found in which suggested classifications and origins of these 

 growths were offered but so far no imiformity of opinion has been 

 reached. 



The purpose of this paper is to report a tumor which falls in 

 the general classification of tumors of the cortex but the origin 

 appears different from those reported in literature on this subject. 

 In the study of this tumor an attempt was made to answer, if 

 possible, the following questions : 



(1). How do these tumors arise, from tubules which are con- 

 tinued from them or from glomeruli? (2). Do they represent 



