1912] The Ottawa Naturalist. 19 



capsules filled with smooth shining amber seeds. Lying deep 

 in the cool sphagnum we discovered the pale yellow flowers of 

 the little Coral -root, Corallorrhiza trifida Chatelain and the 

 nodding rose-coloured blossoms of Vaccinium Oxycoccos L., with 

 its delicate foliage wandering about everywhere between the 

 pitcher-plants, most capriciously and fancifully. The silky 

 t assels of the Cotton Grass, Eriopht >ruht viridi-carinaHim(Enge\m.) 

 Fernald., waved above the blue flags and tall spikes of the green 

 orchid, Habenaria hyperborea (L.) R. Br. and stirred the lightly 

 poised petals of the Lady's Slippers. I found five different 

 species of these last named exquisite orchids in this one swamp: 

 the large yellow Lady's Slipper, C. parvifiorum Salisb. var. pubes- 

 cens (Willd.) Knight; the smaller one, sweet scented with rich 

 madder-brown sepals behind the yellow lip; the pink stemless, 

 C. acaule Ait., looking pale in its unaccustomed damp surround- 

 ings; the Ram's Head Lady's Slipper, C.arientinum R. Br., and 

 the Showy Lady's Slipper, C. hirsutum Mill. These last lovely 

 orchids were growing in great quantity, even more abundantly 

 than the pitcher plants, but we were too early for them, there 

 were not more than half-a-dozen in bloom. The 22nd of June, 

 or a little later, is the best time to see them. 



At the side of the path leading into one of the most enticing 

 of these open spaces, there is a stump of a tree, covered with 

 charming mosses and lichens, which our guide proudly designated 

 as the "Lady Grey Stump." Lady Grey paid a visit to the 

 swamp when the Showy Lady's Slippers were in full bloom, 

 and she sat here to rest in the midst of thousands of these beau- 

 tiful pink and white orchids. 



BOOK NOTICE. 



Water-powers of Canada. The first inventory ever 

 taken of the water-powers of Canada has been completed by 

 the Commission of Conservation and the results embodied in a 

 large and profusely illustrated report just issued. The investi- 

 gation made by the Commission, which has extended over a 

 period of two years, shows that there are 1,016,521 horse-power 

 developed from water-power in Canada. Every phase of the 

 subject from the laws governing the disposition of water-powers 

 in the various provinces, to the actual physical data regarding 

 each individual water-power concerning which information was 

 obtainable, is treated in the report. In addition, there is a 

 very full bibliography of 30 pages, and appendices giving, 

 among other things, the text of the laws concerning the export 

 of power and also of the treat v recently concluded with the 



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