PliA("riC.\L EXEKCllSES. 



35. — Examine the scurfy under surface of a leaf of the common Shepherdia. View a small portion 

 under a good microscope and write notes on what you observe. 



3(). — Scrape the surface of a slice of Potato with a knife, mount the scraping, and examine with a good 

 microscope. Add a drop or two of solution of iodine ; examine again, and describe and explain 

 the result. 



37. — Try similar experiments with a Turnip, a Carrot, an Apple, a softened Pea, and write notes on 



the results. 



38. — Study the germination of a Pea, a Windsor Bean, and a grain of Indian Corn. Write notes 

 upon any phenomena observed. Trj^ the effect of different temperatures on tlie rapidity of ger- 

 mination. 



39. — Observe and write notes upon the different aspects presented bj- plants when grown in the shade 

 and when exposed to full sunlight. 



40. — Immerse a few green leaves in a bottle full of water. Invert upon a shallow di.sh of water witli- 

 out spilling. Expose the whole to strong sunlight, and examine after two or three hours. 

 Describe and explain anything you observe. 



41. — Repeat the last experiment, placing the apparatus in a dark closet. Note results. 



42. — Fill about one-third of a large wide-mouthed bottle with well-soaked Peas. After three or four 



hours carefully remove the stopper and lower into the bottle a lighted match or tai>er. Note 



and explain results. 

 43._Grow a hyacinth or a crocus in a perfec:-^v dark cellar. Note the effect upon the colour of the 



leaves, and also upon that of the flowers. 

 44. —A plant growing in a window bends towards the light. What inference would you draw as to 



the effect of light upon the rate of growth ? 



4r,. —Procure and examine the structure of the little bladders found on the immersed leaves of the com- 

 mon Bladderwort. Note the action of the trap-door leading into the* bladder. Examine also 

 the contents, and make notes of your observations. 



46.— Examine the structure and contents of the leaves of the Pitclier-jilant. Make drawings and 

 notes. 



