114 ZOOLOGY 



together into large globules with Golgi fragments upon their 

 surfaces. 



Finally, Bowen deals with lachrymal glands producing a watery 

 secretion, and also glands of the male reproductive system. In 

 the case of the lachrymal glands, such as the tear gland of the cat, 

 Harderian gland of the duck and the infra-orbital gland of the 

 rabbit, the general cycle is similar to that of the mucous glands. 

 The Golgi reticulum lies near the nucleus away from the lumen. 

 The granules appear amongst the reticulum, and as they are formed 

 are pushed towards the lumen. The Golgi apparatus undergoes 

 hypertrophy, but never loses its position or extends far up the cell. 

 Great complexity of the network characterises the onset of secre- 

 tion. In the glands of the epididymis of the cat he was not able to 

 follow the secretory cycle completely owing to his inability to 

 demonstrate the secretory granules. Hypertrophy of the Golgi 

 apparatus seemed to occur in the middle and end of the cycle. 

 His most interesting point is in connection with the epithelium of 

 the vas deferens. In the cells of this tissue a reversal of the 

 " normal " position occurs and the apparatus is found below the 

 nucleus away from the lumen. This condition had been reported 

 previously by Cowdry, and has also been remarked on subse- 

 quently by Cramer and Ludford in the thyroid gland. Cowdry 

 believed it to be the result of the secretion passing outwards into 

 blood vessels instead of into the alveolus. Cramer and Ludford 

 cannot agree with this, and do not find activity of the Golgi 

 apparatus directed towards the blood vessels at this time. Bowen's 

 interpretation of the reversed polarity in the epididymis is the 

 same. He can find no evidence of reversal of direction of secretory 

 activity. He concludes that a reversed polarity of the cell pro- 

 duced by a change in the position of the Golgi apparatus has no 

 influence on the secretory cycle. 



Nassonov had meanwhile pursued another line of inquiry, which 

 has proved equally good. In two papers (91, 92), he has described 

 the contractile vacuole and its related structures in Protozoa after 

 using Golgi methods of preparation (Kopsch, Kolatschev). His 

 material of the first paper consists of Holotrichan infusoria {e.g., 

 Paramcecium caudatum), Peritrichan infusoria (e.g., Vorticella sp.), 



