The plastic containers are inexpensive 
enough to be considered disposable. Our micro- 
biological group is currently investigating 
the possible deleterious effects of various 
types of plastic material on the microorganisms 
in water samples. 
CONCLUS LON 
The oceanographic reference marker buoy 
and wire slope and azimuth indicator are now 
generally used in our oceanographic survey 
work. Though it has not been used extensively 
at sea, the sterile biological sampler has 
been successfully tested. 
REFERENCES 
1. "The current patterns on the Tortugas 
Shrimp grounds". F. F. Koczy, et al., 
Proceedings of the Gulf and Caribbean 
Fisheries Institute 12th annual session, 
November 1959 pages 112-125. 
2. "On instrumental measurement of the line 
shape under water. Concerning the 
determination of vertical distribution of 
slope (magnitude and direction) down 
oceangr. wire, and the measurement of 
current-caused obliquity of a rope strain- 
ed between an anchor and a sub-surface 
buoy." Carruthers, Ji Nie, et. alc, Dt. 
Hydrogr. Z 7 1954, page 22. 
"On instrumental measurement of hydro wire 
slope' Carruthers, J. N. Dtsh. Hydrogr. 
Cal 2 IO SOR eG 7 =1e7. 1. 
4. ‘Marine microbiology" Zobell, C. E. pub- 
lished by Chronica Botanica Co., Waltham, 
Mass. 1946. 
5. "A sampler for the selection of samples 
of water for bacteriological analyses." 
Sorikin, I. Institute of Reservoir 
Biology Academy of Science, U.S.S.R. 
bulletin No. 6, 1960, pages 53-54. 
w 
. 
ACKNOWLEDGEMENT 
The development of these devices was 
supported in part by the Office of Naval 
Research, Contract No. 840(01), under the 
supervision of Dr. F. F. Koczy, Chairman of 
the Division of Physical Sciences, Institute 
of Marine Science, University of Miami. The 
aid and cooperation of the following staff 
members in the preparation of this paper are 
gratefully acknowledged: Dr. Koczy for his 
valuable advice and appraisal; Dr. Gene 
Rusnak for his corrections and comments; and 
Mr. M. Rinkel for his cooperation in the field 
tests of these devices. 
250 
