NOTICE OF A VISIT TO PITMASTON. 271 



has nothing to do either with the present plant, or what linger 

 has referred to that generic name. An opportunity of inspect- 

 ing a perfect authentic specimen of this plant, which does not 

 seem to have been observed by any other mycologist, has shown 

 that it belongs to another group, the spores, which are very 

 minute, oozing forth in irregular masses, and in fact allied to 

 Nemaspora. Dr. Leveille's observation then, as far as Dr. 

 Greville's plant is concerned, requires correction. 



Explanation of the Figures. 



1. Cystopus Candidas, Lev., on cabbage, natural size. 



2. Threads of spores, with their sporophores and mycelium magnified. 



3. Spores, sporophores, and mycelium from a young plant more highly 



magnified. 



4. Ditto, from Uredo Amaranthi, Schwein., magnified less than the two 



preceding. The figure is taken from a dried specimen, and conse- 

 quently exhibits a less succulent mycelium. 



XXXII. — Notice of a Visit to Pitmaston, near Worcester^ 

 Maxj 25, 1848. By Robert Thompson. 



(Continued from p. 235.) 



The peach-house is 25 feet long and 19 feet wide ; it is heated by 

 hot-water pipes, a flow and return, in the usual way. Four feet 

 has been added in front to the width of the house, and in this 

 space of 4 feet, between the old and new front walls, filled with 

 rich soil, the peach-trees were planted, and are thriving well. 

 The pitch of the roof is at an angle of 21 degrees. This house 

 was originally constructed for the purpose of growing Persian 

 melons, and the arrangement for a circulation of heated air still 

 remains. The hou.se was then 15 feet wide, and heated by flues 

 so deep that they may be termed hot-air chambers. The back 

 wall is 10 feet high from the level of the ground ; the house is 

 entered by a door in the middle of this wall. On entering there 

 is a descent, by steps, of 2 feet to a paved floor, and nearer the 

 flues a farther descent of 10 inches, so that the flues are based 2 

 feet 10 inches below the ground-level. The front flue is 4 

 inches from the original front wall ; between this flue and the 

 return one parallel to it there is a space of 6 inches. Crossing 

 the end, the return flue terminates in an upright iron cylinder in 

 the north-west angle, at the back wall. Standing on the paved 

 floor of the house, 2 feet 10 inches below the outside ground- 

 level, the flues are seen to be supported on a series of flat arches, 

 seven in number, extending from end to end of the house ; a 

 nearly close breast-work is however exhibited, the arches being 

 closed in, with the exception of three air-passages in each. 



