702 NOTES. 
the undiscovered, uncertain whether you have found all that can 
be found. No better tests are yet known of the quality of micro- 
scope lenses than the diatoms and Nobert’s lines. To know that 
you have obtained the best results in your own specialties you 
must know what your instruments can do on known objects; to 
‘increase knowledge’ in your own departments, you must use the 
best instruments and the highest powers the skill of the optician 
can produce. Science cannot be much advanced by the use of 
lenses of twenty years ago.” 
Metrnops or Srupy IN Inrusorta.—An abstract of an ex- 
tremely suggestive paper relative to this subject is given under 
** Reviews” in this number of the NATURALIST. 
: ”? 
Correction TO NOTE on Aperture. —‘‘ Improved assumption 
. . : 29 
p. 567, line 1, should have been printed ‘‘ unproved assumption. 
NOTES. 
Tur Kansas Academy of Science held its sixth annual meeting 
at Lawrence, Kansas, on Sept 11 and 12. This Academy holds its 
annual meeting of two or three days duration in different places 
in the state. Papers are read on various subjects, and consider- 
able work is done for the encouragement of science throughout 
Kansas. Quite a number of papers were read, and a special 
address was delivered which was anti-Darwinian in character. 
Among the papers falling in our sphere for notice, was one by 
Prof. F. H. Snow on “ Injurious Insects,” and one by Prof. B. F. 
Mudge on the “ Discovery of Fossil Footprints in Osage County,” 
of ‘middle permian” age. Several hundred tracks were collected 
and will be sent to Prof. Marsh at New Haven. Another pape? 
by Prof. Mudge was on the “Mound Builders.” The evidences 
of this ancient race in Kansas consisted in finding deposits of 
pottery, indicating ancient villages, but we do not note anything 
in the description of the remains that prove them to be those of 
mound builders any more than of Indians of more recent date. 
No mounds are mentioned, and, until the pottery found has been 
carefully compared with that unquestionably made by the mound 
builders and the Indians, the particular race whose remains are 
described must be left in doubt. The following is the most inter- 
esting part of the paper as reported :— 
= “But the most important locality seen by us in Kansas lies not 
