The Nature Library 
the open sunny woods in March or early April he may know 
spring has really come and that the first hepatica will soon open 
its blue eye. 
Mr. Howard's Insect Book ought to start many of its readers 
to observing flies and bees and prying into their life-histories, 
many of which are as yet not fully known. Not a farm-boy but 
knows of the big fat grubs in cows’ backs in the spring. It was 
always a mystery to me how they got there. Now it is known 
that the creature has traveled all the way from the cow’s 
stomach, where the egg of its parent—the bot-fly—was hatched, 
making its way slowly ‘‘through the connective tissues of the 
cow, between the skin and the flesh, penetrating gradually along 
the neck, and ultimately reaching a point beneath the skin on the 
back of the animal.” 
We have only to look into nature a little more closely and 
intently, to whet our powers of observation by the use of such 
books as this Nature Library contains, to add vastly to our 
pleasure in and our knowledge of the world that lies about us. 
