66 TEIONLIING (Oy SH OIG BLL, 
Experience has shown that, of the long list of patterns origi- 
nally suggested for use, a certain few almost invariably fail to give 
good results in practice. Some of these are apparently poor, 
whatever paper is used; others fail only when the less highly 
surfaced papers are printed on. The last class are still service- 
able for maps issued flat or in rolls; but can not be utilized with 
good results for folded maps, for which a highly surfaced paper 
is undesirable. Examination of a large series of maps on which 
patterns have been used will aid in determining which will be 
most effective in the special case under consideration. 
In the preparation of this paper, the writer has made free 
use of the experience of this office, and has been greatly aided 
by the advice) of Dr .)). Ee Merrill Maps issued by sthe 
United States Geological survey have been used as examples, in 
order to avoid the citation of maps published by the New York 
State Museum. 
EpwIn C. EcKEL. 
NEw YORK STATE MUSEUM, 
Albany, N. Y. 
