18 MICHIGAN ACADEMY OF SCIENCE. 



24. State all of our native trees and shrubs and grade them with 

 reference to the relative amount of liiirht thev need or shade thev will 

 endure. 



25. Experiment and observe to show that thin-folia<i:ed trees should 

 not be i)lanted by themselves. 



26. Which species of trees are least liable and which most liable to 

 serious trouble from insects, fungi, wind, sleet, etc.? 



27. Compare the economic value of good trees of different species, tak- 

 ing into account the rapidity of growth and freedom from insects and 

 disease, and the value of the land on which they grow. 



28. Secure seeds of every promising species from ten to twenty other 

 states and test side by side with Michigan seed to learn w^here is the 

 best place to secure seeds. 



29. For a series of years, record the seasons when each species fruits 

 abundanth', noting frosts in spring. 



3(1. Note the ages of different species, as they begin to bear fruit and 

 as they bear it in abundance, and those rarely fruiting with seasons 

 for the latter. 



31. Test the vitality of seeds and nuts buried in the soil at different 

 depths. 



32. Observe the modes and the distances of seed dispersed, and try to 

 learn what becomes of all the nuts and seeds with many details. 



33. Observe when each kind of seed begins to grow and follow up 

 seedlings to see what becomes of them in certain specified- areas. 



34. Experiment on seedlings of various promising species to learn 

 the most suitable size for transplanting. 



35. Experiment on numerous methods for learning the best and most 

 economical way for securing thrifty young white jiines and Norway pines 

 planted where they are needed for a forest. 



36. Experiment to learn the proper distances for planting white pines. 



37. Observe and experiment to learn the readiness with which some 

 different species of trees reproduce trees from sprouts. 



38. Try different methods of renewing a forest. 



39. Try different methods of management in cultivation, in mulching 

 and in leaving to nature. 



40. Compare trees of all sorts that grow from sprouts with seeding 

 of the same kinds, for vigor and health. 



41. Experiment to see if it pays to thin trees, or lop off the tops of trees 

 of poor quality as they grow about trees of desirable species. 



42. Note the changes for some years, that take place in the neighbor- 

 ing young trees that surround the spot where one or more large trees 

 have Ix'f-n ii^noved. 



43. It is estimated that twice as much limber is stolen as is destroyed 

 by lire. This subject should be referred to an able committee of whom 

 some should be lawyers, to devise the best modes of putting a stop 

 to such work. This is the problem of first importance. 



44. Eunmcrate the sources of danger from fires in the State. 



45. Where arc the fires most fre(pient and severe? In such neighbor- 

 hoods try by working with the people to induce reform. 



46. Work out the details as to origin, course, extent and danuige of 

 some one fire. 



