Word Study
therein
CIDE DICTIONARY
therein, adv.
In that or this place, time, or thing; in that particular or respect. Wyclif. [1913 Webster]
"He pricketh through a fair forest,
Therein is many a wild beast." [1913 Webster]
Therein is many a wild beast." [1913 Webster]
"Bring forth abundantly in the earth, and multiply therein." [1913 Webster]
"Therein our letters do not well agree." [1913 Webster]
For further exploring for "therein" in Webster Dictionary Online