WARD'S CASES. 147 
again for a very long time, as the moisture con- 
denses on the side of the glass, and runs down 
to the earth again. Ferns and mosses grow in 
beautiful clusters here, and when the boxes are 
nicely made, they form one of the most beautiful 
ornaments possible for a lady’s drawing-room. 
One could-almost fancy it was a great conserva- 
tory, so completely do the forms of some of the 
plants often grown in these cases resemble those 
of large trees.. Probably one great reason of the 
success of this little contrivance is the fact, that 
little of the external air can get into it to injure 
