The external morphology and life cycle of Boophilus microplus - a cattle tick - were given. The control of ticks as well as host resistance to ticks were also mentioned.
The authors gives a comparative schedule of characteristic ova features collected from 13 kinds of threadworms, parasites found in the digestive duet of sheep and illustrates it with drawings and photos. On base of faeces examination she detected ova belonging to Oesophagostomum columbianum Curtice, a parasite which was not quoted in the Polish fauna up to now.