14 FLORIDA GEOLOGICAL SURVEY SIXTH ANNUAL REPORT. 



own publications which must be cared for temporarily awaiting 

 their distribution. 



In connection with the work of the Survey there is a constant 

 accumulation of notes, records, photographs, manuscripts, plates 

 and cuts, as well as the general correspondence of the office which 

 must be cared for. The present limited office space affords no 

 room for storing, filing or properly caring for these records. 



I urgently recommend, if it meets with your approval, that 

 the Legislature be asked to provide adequate rooms for the future 

 work of the State Geological Survey. 



A STATE MUSEUM. 



The desirability of an adequate museum in which to properly 

 exhibit the resources of the State is apparent. The State Survey 

 law makes it the duty of the State Geologist to collect, determine 

 and label specimens illustrating the geological and mineral fea- 

 tures of the State and large collections have been made since the 

 Survey was organized. The small room used for exhibition pur- 

 poses has long since been filled and a large amount of material 

 suitable for exhibition remains unopened in boxes as collected. It 

 is important that the State provide for the proper preservation 

 and exhibition of the Survey collections in a State Museum. 



THE PREPARATION OF A DETAILED TOPOGRAPHIC MAP OF FLORIDA. 



While a general topographic map of Florida with contour lines 

 at 50 foot intervals of elevation has been issued, as already stated, 

 there is a constant demand for detailed topographic maps on a 

 scale of about one inch to the mile and with contour lines at 10 

 foot intervals of elevation. Topographic maps are usually made 

 in atlas sheets covering unit areas bounded by parallels and merid- 

 ians. The unit adopted by the United States Geological Survey 

 in topographic mapping, designated as the quadrangle, includes 

 when made on the scale of about one inch to the mile an area of 



15 minutes of latitude by 15 minutes of longitude. A separate 

 atlas sheet is issued for each unit area and when completed the 

 maps so issued make up a complete map for the state as a whole. 

 The maps thus made show the land area in relief by means of 

 contour lines. In this way all hills, valleys, stream channels, sinks, 

 depressions and all changes in elevation are indicated. Tlie actual 



