SUMMARY OF CUPiRENT RESEARCHES 



RELATING TO 



ZOOLOGY AND BOTANY 



(principally invertebrata and cryptogamia) 



MICKOSCOPY, Etc.* 



ZOOLOGY. 



VERTEBRATA. 



a. Embryolog-y.-j- 



Implantation of Human Ovum. % — Fr. Delporte gives a well- 

 illustrated account, in part based on his own researches, of the embedding 

 of the human ovum in the mucous membrane of the uterus, and of the 

 development and disappearance of the trophoblast. 



Development of Dentine Matrix.§ — A. and E. Lickteig show that 

 the formation of the dentine matrix is, from the earliest primordium on 

 to the completion of the growth-process, a function of the odontoblasts. 

 There is no evidence of a double mode of origin of the dentine. Its 

 origin is wholly referable to processes going on in the dentine matrix. 

 The formation of the dentine matrix and of the dentine is a continuous 

 process. 



Histogenesis of Pineal Organ. || — H. Funkquist has studied this 

 both in Birds and Mammals. The epiphysis arises as a pouch-like 

 diverticulum from the roof of the pars parencephalica. It afterwards 

 becomes ampulla-like. In some divers it is constricted off. In one 

 type (e.g. sparrow and opossum) the simple ampulla form is retained, 

 though the organ may become almost solid. In another type (diver, 



* The Society are not intended to be denoted by the editorial " we," and they 

 do not hold themselves responsible for the viewg of the authors of the papers 

 noted, nor for any claim to novelty or otherwise made by them. The object of 

 this part of the Journal is to present a summary of the papers as acttially 

 published, and to describe and illustrate Instruments, Apparatus, etc., which 

 are either new or have not been previously described in this country. 



t This section includes not only papers relating to Embryology properly so 

 called, but also those dealing with Evolution, Development, Reproduction, aud 

 allied subjects. 



t Contribution a I'etude de la nidation de I'oeuf humain. Brussels (1912) pp. 

 vi + 206 (2 pis. and 88 figs.). 



§ Arch. Mikr. Anat., Ixxx. (1912) pp. 117-56 (1 pi.). 



II Anat. Anzeig., xiii. (1912) pp. 111-23 (15 figs.). 



