C. J. van der Horst

ON THE WHAITSIIDAE, A FAMILY OF THEROCEPHALIAN MAMMAL-LIKE REPTILES

The distinctive characteristics of every genus and species belonging to, or related to, the family, Whaitsiidae, are described. Special attention is given to interrelationship. Ten genera and twenty species are described or discussed, including one new genus and five new species. Attempts are made to illustrate their relationship in the form of a genealogical tree and the genera are discussed in the order Promoschorhynchus, Moschorhynchus, Whaitsia and Notosollasia, starting with the primitive new genus and proceeding in the order of specialization. The relationship of the genus Moschorhinus is then discussed and thereafter the incompletely known genera Alopecopsis, Notaelurops, Aneugomphius, Theriognathus and Hyenosaurus. The new species described are Promoschorhynchus plalyrhinus, Moschorhynchus brachyrhinus and M. gracilis, Notosollasia boonstrai and N. longiceps.

Occurrence of Keto-Acids in Blood Serum and Urine of Cattle in Comparison with Man, Horse, Sheep and Dog

IN connexion with metabolic disorders occurring in cows, such as parturient paresis and acetonæmia, an investigation concerning the keto-acids occurring in blood serum and urine was started. Several authors have carried out work in this field concerning man. Keto-acids are converted into 2,4-dinitrophenyl-hydrazones, after which they are separated by means of paper chromatography. The 2,4-dinitrophenyl hydrazones are reduced by hydrogen to amino-acids and identified as such. In this way Cavallini et al.1, El Hawary and Thompson2, Markees3, Biserte and Dassonville4 and De Schepper et al.5 showed that the following α-keto-acids occur in human blood: α-ketoglutaric acid, pyruvic acid, α-ketoisocaproic acid, α-ketoisovaleric acid and α-keto-β-methylvaleric acid. Moreover, it was shown that pyruvic acid predominates in human blood and α-ketoglutaric acid in human urine4.

Occurrence and Determination of Inositol in the Oviducts of Turkey and Hen

AT the junction of uterus and vagina of the turkey a few scattered tubular glands have been observed, Spermatozoa are stored there2 and retain their fertilizing ability for about 45 days2. Turkey semen collected for insemination, however, has to be used within an hour of ejaculation, because fertility decreases considerably after that time.