954 APPENDIX. 



3864k. Goppert on Medicinal Plants, Botanical Mu- 

 seums, Formation of Veins, Inscriptions in Trees, 

 Effects of Internal Injury, Process of Grafting. 



Royal Botanical Garden and Museum of the University of 

 Breslau, Prof. Dr. H. R. Goppert, Director. 



EDUCATIONAL. 



EXAMPLES OF ELEMENTARY PHYSICAL APPA- 

 RATUS. 



The pieces of apparatus in this collection were made by the 

 pupils Messrs. Boughton and Owen in the Physical Laboratory 

 at the Science Schools, South Kensington. They are intended 

 to show what can be done by Science students in the matter 

 of making their own apparatus, and to indicate that neither 

 great expense nor great manipulative skill is required to put 

 such students in possession of instruments capable of illustrating 

 the ordinary laws and phenomena of physics. 



Frederick Guthrie, F.R.S. 



PROPERTIES OF AIR AND WATER, 



4000a. Cardboard Mercury Tray. 



4000b. Glass Millimetre Scale. 



4000c. Boyle's Tube. 



4000d. Siphon Barometer. 



40OOe. Water Hammer. 



4000f. Specific Gravity Bottle. 



4OOOg. Apparatus for estimating density of Mercury. 



SOUND. 



400Oh. Monochord. 

 4OOO1. Compound Motion Spring. 

 40OOj. Sensitive Flame. 



