1. Preface

   EditorialNotes Pages: 1 - 1

2. Introduction

   • Frederick Sargent II

   EditorialNotes Pages: 3 - 4

3. Heat tolerance in cattle-its concept, measurement and dependence on modifying factors

   • W. Bianca

   OriginalPaper Pages: 5 - 30

4. A method to estimate the effect of weather changes on the growing rat

   • W. H. Weihe
   • H. Brezowsky

   OriginalPaper Pages: 31 - 36

5. The mechanism of hidromeiosis

   • Frederick Sargent II

   OriginalPaper Pages: 37 - 40

6. Conference report First international conference on ionization of the air

   • I. H. Kornblueh

   Report Pages: 41 - 42

7. Announcement

   Announcement Pages: 43 - 43