48 GROWTH IN WATER, MOSS, AND SAND. 



renewing the water, care must be taken that that supplied 

 be of the same temperature as that taken away. 



There are many forms and colors of glasses : those of 

 dark glass are best for the bulbs. 



The accompanying figure shows some of the many attrac- 

 tive forms : 



The bulbs usually grown in glasses are hyacinths : but 

 we occasionally see English iris, tulips, and narcissus, 

 which make a pretty show ; the treatment required for them 

 being the same as for the hyacinth. 



A few drops of glue or ammonia, added to the water in 

 which bulbs are grown, increases the brilliancy of the 

 flower, and strengthens the bulb. 



