1. Origin of adventitious roots in green shoot cuttings of masaki (Evonymus japonicus THUMB) was examined, using mostly cross sections, 40 μ in thickness, cut upon sliding microLome from fresh materials, preserved in 10 per cent formalin, and stained with safranin and Delafield's hematoxylin.
2. Square-shaped vascular system of the masaki stem is continuous except in node, in which one pair of corners becomes leaf traces and above the short leaf gaps, branch traces and branch gaps are present. Endodermis is not evident, and pericycle is very noticeable by their fiber groups. Out of the sides of vascular square, four aerenchyma are present in cortex.
3. Uniseriate linear ray tissues are evident in abundace.
4. In the cambial region, some ray tissues with other neibouring cambial cells together become a root primordium, but in a later stage ray tissues only remain meristematic and in an even later stage, shortly before the outward elongation as a recognizable root, whole region of the group becomes equally meristematic again.
5. The primordium of a root appears always on a side of the vascular square not at a corner, except in basal region.
6. Other kinds of roots are also initiated in callus tissues, which have developed out of the cut surface and around the inner decayed tissues, but of these roots, the auther failed to trace the process of initiation and develoloment.

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R. Kanezawa, H. Nabeshima and A. Ando: On the Morphological changes and wood fibers of tetraploid Paulownia Kawakami T. T. Co.
Writers confirmed the somatic doubling of tree-tops by the cytologecal studies on the young leaves of tetraploid Paulownia Kawakami T. Ito, which were induced by colchicine treatments in the spring of 1942, and determined the chromosome numbers 2n=40 for the diploid and 2n=80 for the tetraploid. On the tetraploid, the thickness of leaves shows an increase of 2.5%, major and minor axes of stomata increase by 13.7% and 8.8% respectively, but stomatal counts decrease by 3% per 1 mm². These changes are not very remarkable characteristics as polyploids, but hairs increase by 39.9% in lenghth and 20.7% in thickness. Forest-trees have great quantitative variations, so it is illogical to compare morphological changes and leave this fact out of account in different individuals.
According to the somatic doubling, wood fibres increase about 30% in length and above 40% in thickness, but it is impossible to say of the growth of a tetraploid tree without future studies of it.

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As the result of my vegetational survey based upon a quadrat method, the warm temperate forests in Boso and Izu Peninsula were systematized as following.
1. Machilus Thunbergii-Pittosporum Tobira•Association.
2. Shiia Sieboldii-Eurya japonica-Association.
The first association is separated from the next by the four characteristic species-
Machilus Thgnbergii S. et Z.
Rittosporum Tobira Art Neolitsea Sieboldii NAK.
Polystichum japonicum DIETS.
The second is characterized bx the four species given bellow.
Shiia Sieboldii MAK. Cyelobalanopsis acuta OERST.
Eurya japonica THUNB.
Rumohra pseudo-aristata H. ITO.
Tnis. association can be divided into four subassociations, namely as follows- A. Shiia Sieboldii-Carex brunnea-Subassociation.
Differential species.
Pittosporum Tobira AiT.
Textoria trifida NAK.
Damnacanthus indicus GAERTN. f.
Carex brunnea var. Nakiri OHWI.
B. Shiia Sieboldii-Ficus erecta-Subassociation.
Differencial species.
Ficus erecta THUNB.
Daphniphyllum glaucescens BL.
Darinacanthus zndicus GAERTN. f.
Alpinia japonica MIQ.
C. Cyclobalanopsis stenophylla-Sakakia ochnacea-Subassociation Differential species.
Sakakia ochnacea NAK.
Illicium anìsatum L. Osmanthus ilicifolius STAND.
Plagiogyria japonica NAK.
D. T'suga Sieboldii-Betula earpinifolia-Subassoeiation.
Differential species.
Tsuga Sieboldii CARR.
Abies firma S. et Z.
Belula carpinifolia S. et Z.
Machilus Thunbergii-Pittosporum Tobira-Association is found near to tle coast at low altitude, usually bellow 50m. Attatched to this, Shiia Sieboldii-Carex brunnea-Subassociation occurs in Tyosi district and Shiia Sieboldii-Ficus erecta-Subassociarion in Awa district. The inland types of the warm temperate forest are Cyclobalanopsis stenophylla-Sakakia oehancea-and Tsuga Siebloldii-Betula carpinifolia-Subassociations,
From the physiognomical point of view, these communities represent the Northernmost type of L urisilvae in East Asia, here such life forms as gigantic epiphyte ferns like Neottoperis as well as succulent-stemmed epiphyte like Procris laevigata are absent, while deciduous broad-leaved trees, as Pinnus serrulata, Betula carpinifolia etc. are often found. The Hymenophyllaceous ferns are also rare in these forests.
The mean temperature and yeary precipitation are usually considered as limiting the occurences of forest of forest vegetation. In Awa, however, the mean temperature of 15° 5 seems to delimit the occurence of the two foregoing, associations, while in Tyôsi 14° 7 allowss the devopment of Machilus Thunbergii-Pittosporum Tobira-Association, almost the same temperature is reported from Yugasima, an inland observatory in Izu, where Shiia Sieboldii-Eurya japonica-Association thrives vigorously. The line of separation seems to run northward parareil to the coast, somewhat independent with the mean annual temyerature.
The rainfalls reported from the inland observatories as Kiyozumi and Yugasima exceed 2000 mm, but near the coast the year total attains far less. The environ-mental factors limiting the bccurences of the given communities are very compound, but as far as the present knowledge goes it might be sure that the coastal and inland climatic factors complexes are acting to separate the two associations, and the Machilus Thunbergii-Pittosporum Tobira Association appriciate less rain than Shiia Sieboldii-Eurya japonica Asociation.
Geological formations seem to have little relations to the occurenees of the plant communities of warm temperate foreat in the present region. The soil type is forest brown soil. The rection is neutral or uery week acid at the surface, but becomes more acidic downward.

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