J * 1 TTER PIT I N VEST 10 A T I ( ) N 



FIRST PROGRESS REPORT. 



COK T E H" T S . 



v 



VT. 

 VII. 

 VIII. 

 IX. 



I. Introduction 

 II. Origin of Investigation 



III. Historical 



IV. Characteristics of Bitter Pit — 



Names given to the Disease 

 Naked-eye Characters 



Microscopic Characters of the Brown Spots 

 Confluent Bitter Pit or Crinkle — 

 General Description 

 Symptoms 



Chemical differences between clean and crinkled 

 An " Obscure Disease " of the Apple 

 Effects of Frost on the Apple 



" Woolly Stripe " of Seed-vessels, and a similar development in the flesh of the Apple 

 Appearances mistaken for Bitter Pit — 

 Hail-marks 

 Bruised skin 



Effects produced by chemical re-agents 

 Local poisoning 



Diseases associated with Bitter Pit — 

 Black Spot or Scab 

 Bitter Rot 



Glassiness or Water-core 

 Mouldy Core 



Varieties of Apple affected with Bitter Pit . . 



General Structure of the Pome or Pip-fruit . . 



The Fibro- vascular System and its Functions — 

 Vascular bundles as a whole 

 Functions of the Bundles 

 Vascular bundles in relation to the Seeds 

 Vascular bundles in relation to each other 

 The Skeleton 



XI. 

 XII. 

 XIII. 



