116 THE PLANT WORLD. 



Quercus veUttina more than the others showed a much earlier 

 start on the upper part of the tree than on the lower. On May 15, 

 the upper branches had the buds well opened, and the growth extended 

 to the 3 year twigs, while the lower branches had the buds but slightly 

 opened, and the growth was just beginning on the 2 year branches. In 

 other respects this resembled the other species. 



With the Pine the first new wood was observed on May 19, when 

 the buds were just opening, and the growth was much greater on 2 and 

 3 year twigs than on 1 year. On May 31 new wood, all thin walled, 

 was found on the trunk, but on the lower branches growth had only 

 extended to the 5 year branches. On June 20, the new growth was 

 found on all parts of the tree, and the wood of the trunk had thickened 

 cell walls. 



JUDGING BY THE FRUITS. 

 By Byeon D. Halsted. 



THL present season the writer changed the text book with an ele- 

 mentary class in botany from Gray's Lessons to Coulter's 

 Plant Relations. It was an experiment that has been watched 

 with much interest. 



The work with plants has been as nearly the same as possible, all 

 being required to become familiar with and pass an examination upon 

 twenty-five species representing several typical orders. Of course it 

 is impossible to have the same student take both courses, and the 

 nearest to that is to select two brothers who are very much alike and 

 present the written work of each as done upon examination day. 



The list of questions for 1899 from Gray's Lessons is as follows: 



"Define: — 1. Embryo. 2. Germinate. 3. Node. 4. Axil. 

 5. Hypogaeous. 6. Endosperm. 7. Bud. 8. Growth. 9, Second- 

 ary Root, 10. Parasites, 11. Winter Annuals. 12. Tendrils. 13. 

 Peltate Leaf. 14. Leaflet. 15. Phyllodia. 16. Cladophylhi. 17. 

 Umbel. 18. Cyme. 19. Symmetrical Flower. 20. Dioecious. 21. 

 Adnation. 22. Perigynous. 23. Diadelphous. 24. Versatile. 

 25. Compound Pistil. 26. Aggregate Fruit. 



Draw: — 27. Rose Leaf. 28. Tuber. 29. Section of Exogenous 

 Stem. 30. Under Skin of Leaf. 



Consider at Length: — 



