SUMMARYThe authors analyse data collected over 23 years from 500 cryptorchid horses. They show that left-and right-sided abdominal cases occur with approximately equal frequency in ponies. Approximately half the right-sided unilateral abdominal cases have the epididymal tail descended while only 20 per cent of the left-sided cases do. These findings are briefly discussed.From their analysis of inguinal cryptorchidism the authors conclude that it is a relatively more complex phenomenon with incidence changing with age as well as breed. Right-sided retention predominates in young ponies, probably being an extreme expression of testicular hypoplasia, but in older ponies and in other types of horse, retention occurs equally on the left and right.

The history of techniques for abdominal equine cryptorchidectomy is briefly reviewed. The technique of suprapubic paramedian laparotomy as used since 1955 at the University of Liverpool veterinary field station is described in detail and an account given of the authors' experience with the technique in nearly 200 cases. It is concluded that the approach to the abdominal cavity is easy, that the testis itself is generally readily located and removed and that controlled repair of the incision is possible. Serious post-operative complications are rare and the danger of post-operative prolapse of bowel eliminated.

SUMMARY Observations on the healing of 2 cm square full thickness cutaneous wounds inflicted on the flanks and lower limbs of Welsh ponies revealed different patterns of wound contraction in the two areas. The rate of healing observed in limb lesions was approximately half that of flank lesions. Stellate scars were produced on the flank which subsequently became further reduced in size. Square scars were produced on the limb which subsequently enlarged in size. The significance of these findings is discussed. RÉSUMÉ Des observations furent faites sur la cicatrisation des plaies cutanées de 2 cm2 intéressant toute l'épaisseur de la peau. Ces plaies étaient faites sur les flancs et sur la partie infèrieure des membres de poneys gallois (Welsh poneys). Suivant leurs sites des processus différents de cicatrisation furent constatés. Au niveau des flancs, la vitesse de cicatrisation fut deux fois plus grande qu'au niveau des membres. Des cicatrices en étoile sur les flancs virent leurs dimensions se réduire. Au contraire certaines plaies carrées sur les membres virent leur surface s'accroitre. On tente d'expliquer ces observations. ZUSAMMENFASSUNG Beobachtungen der Heilung von Hautwunden mit einer Ausdehnung von 2 cm2, die in der ganzen Hautdicke an Flanken und unteren Gliedmassenteilen bei Welshponies gesetzt worden waren, zeigten verschiedene Abläufe der Wundkontraktion. Die Heilungsgeschwindigkeit der Gliedmassenwunden betrug ungefähr die Hälfte derjenigen der Flankenwunden. Sternförmige Narben entstanden an der Flanke; die Grösse der Narben reduzierte sich auch später noch. Quadratische Narben entstanden an den Gliedmassen, wobei deren Grösse später zunahm. Die Bedeutung dieser Resultate wird besprochen.

This paper reports seven cases of penile paraphimosis which occurred in both entire and castrated horses in association with general debility. Two cases were discharged after treatment while still suffering from partial paralysis; one was discharged at the owner's request with complete paralysis; three were destroyed and one died during treatment. Identified causes of debility were malnutrition, severe parasitism, glucose malabsorption and salmonellosis.

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