42 BULLETIN 1412, U. S, DEPARTMENT OF AGRICULTURE 
houses near some of the large cities in the East and Central West. 
It goes into local consumption principally. 
Increasing production necessitates widened geographical distribu- 
tion. Greater improvement in this regard has been made by west- 
PLEASE REFEB TO THIS CERTIFICATE BY NUMBER 
Fig. 24. — Facsimile of inspection certificate on a shipment of lettuce. Issued by 
the Bureau of Agricultural Economics 
ern producing sections than by the eastern and southern districts. 
The Iceberg type of lettuce meets with more favor than Big 
Boston in all large markets except New York, Philadelphia, and 
Boston, and even in these three is gaining in popularity, partly 
because of the general preference for crisp, compact heads of the 
Iceberg type and partly because this type usually has been graded 
