1 88 NATURE STUDY 



Web. What kind of a spider made it, bow did it weave it, wbat use in 



made of it ? 



Spinning organs, position, structure, bow used. 

 General appearance of spiders. 

 Different families of spiders witb characteristics. 



ELECTIVE. 



SELECT two subjects from Elective List No. 2. 

 SELECT one subject from any outside source. 



Sixth Grade, 

 PRESCRIBED. 

 PENDULUM. Construction. 



Lengtb of a pendulum that vibrates once in one second. 



Pendulum witb same length but different weigbts. 



Construction of pendulum tbat vibrates once in two seconds, once in 



three seconds, three times in one second. 

 Use of pendulum as a time instrument. 



POND LIFE. The green scum of Ponds. 

 Diatoms. 



AQUATIC INSECTS. Dragon flies; water beetles; caddis worms; pond 



skaters, or watef striders ; water boatmen ; whirligig beetles. 

 Collection, care and study of life history of three kinds, or substitute 

 any other three kinds of water insects. 



METALS. Collection of metals, such as copper, lead, zinc, iron, aluminum, 



platinum, etc. 



Properties, as relative hardness, flexibility, ease of welding, etc. 

 Alloys. 

 Uses. 



How metals are taken from their ores. 

 Application to mining. 



CRYSTALS. Formation of, to illustrate, occurrence in minerals. 



ELECTIVE. 



SELECT two subjects from Elective List No. 2. 

 SELECT one subject from any outside source. 



