I. The development of Limnaea stagnalis from the first cleavage till the trochophore stage has
been studied with various cytochemical methods. 2. The uncleaved egg is surrounded by a …

The structure and physico-chemical composition of the egg of Limnaea stagnalis and the
changes occurring during the uncleaved stage of the egg were studied by a variety of methods. …

International Series of Monographs on Pure and Applied Biology, Volume 2: Morphogenesis:
The Analysis of Molluscan Development describes the various stages in molluscan …

International Series of Monographs on Pure and Applied Biology, Volume 10: Oogenesis:
The Storage of Developmental Information focuses on the processes, reactions, and …

The structure of the head in 42 cyclopic, synophthalmic, triophthalmic, anophthalmic and
acephalic embryos of Limnaea stagnalis, obtained by the action of lithium, has been studied. 2. …

A method is described for obtaining egg masses of Limnaea stagnalis at the moment desired,
and the nature of the egg‐laying stimulus is analysed. 2. The oogenesis of Limnaea has …

I. La distribution des substances dans les oeufs de Limnaea stagnalis, centrifugé s dans
les derniÃres vingt minutes avant le dé but de la segmentation, é tait é tudié e. 2. La …

The vegetative pole plasm in recently laid egg cells of Limnaea stagnalis is situated
somewhat obliquely with respect to the longitudinal axis of the first maturation spindle. In the …

Uncleaved eggs of Limnaea stagnalis show a pattern of cytoplasmic differentiations in which
there are 6 “subcortical accumulations” (SCA) in the equatorial region. SCA consist of a …

The observations of RIES & GERSCH (1936) on?? a show that not only the pH, but also the
rH of the egg protoplasm differs in different regions of the egg. GERSCH & RIES (1937) have …